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38869980 = 22353717509
BaseRepresentation
bin1001010001000…
…1101111011100
32201010210120220
42110101233130
534422314410
63505041340
7651250362
oct224215734
981123526
1038869980
111aa39656
1211026250
13808c3b6
14523b632
15362c070
hex2511bdc

38869980 has 48 divisors (see below), whose sum is σ = 111783840. Its totient is φ = 10084608.

The previous prime is 38869969. The next prime is 38869981. The reversal of 38869980 is 8996883.

38869980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38869981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6535 + ... + 10974.

It is an arithmetic number, because the mean of its divisors is an integer number (2328830).

Almost surely, 238869980 is an apocalyptic number.

38869980 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38869980 is an abundant number, since it is smaller than the sum of its proper divisors (72913860).

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

38869980 is a wasteful number, since it uses less digits than its factorization.

38869980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17558 (or 17556 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 51.

The square root of 38869980 is about 6234.5793763493. The cubic root of 38869980 is about 338.7438654862.

The spelling of 38869980 in words is "thirty-eight million, eight hundred sixty-nine thousand, nine hundred eighty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 37 60 74 111 148 185 222 370 444 555 740 1110 2220 17509 35018 52527 70036 87545 105054 175090 210108 262635 350180 525270 647833 1050540 1295666 1943499 2591332 3239165 3886998 6478330 7773996 9717495 12956660 19434990 38869980