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38078432 = 2571923389
BaseRepresentation
bin1001000101000…
…0011111100000
32122122120210022
42101100133200
534222002212
63440053012
7641442560
oct221203740
978576708
1038078432
111a548987
1210904168
137b73022
1450b2da0
153522772
hex24507e0

38078432 has 96 divisors (see below), whose sum is σ = 94348800. Its totient is φ = 14750208.

The previous prime is 38078431. The next prime is 38078437. The reversal of 38078432 is 23487083.

It is a junction number, because it is equal to n+sod(n) for n = 38078392 and 38078401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38078431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97694 + ... + 98082.

It is an arithmetic number, because the mean of its divisors is an integer number (982800).

Almost surely, 238078432 is an apocalyptic number.

38078432 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38078432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47174400).

38078432 is an abundant number, since it is smaller than the sum of its proper divisors (56270368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38078432 is a wasteful number, since it uses less digits than its factorization.

38078432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448 (or 440 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 38078432 is about 6170.7723989789. The cubic root of 38078432 is about 336.4286856330.

The spelling of 38078432 in words is "thirty-eight million, seventy-eight thousand, four hundred thirty-two".

Divisors: 1 2 4 7 8 14 16 19 23 28 32 38 46 56 76 92 112 133 152 161 184 224 266 304 322 368 389 437 532 608 644 736 778 874 1064 1288 1556 1748 2128 2576 2723 3059 3112 3496 4256 5152 5446 6118 6224 6992 7391 8947 10892 12236 12448 13984 14782 17894 21784 24472 29564 35788 43568 48944 51737 59128 62629 71576 87136 97888 103474 118256 125258 143152 169993 206948 236512 250516 286304 339986 413896 501032 679972 827792 1002064 1189951 1359944 1655584 2004128 2379902 2719888 4759804 5439776 9519608 19039216 38078432