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38853810 = 2335151953
BaseRepresentation
bin1001010000110…
…1110010110010
32201002222102000
42110031302302
534421310220
63504434430
7651152262
oct224156262
981088360
1038853810
111aa28496
1211018a16
138084c28
1452357a2
153627390
hex250dcb2

38853810 has 64 divisors (see below), whose sum is σ = 104405760. Its totient is φ = 10281600.

The previous prime is 38853799. The next prime is 38853817. The reversal of 38853810 is 1835883.

It is a happy number.

It is a super-2 number, since 2×388538102 = 3019237103032200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (38853817) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40294 + ... + 41246.

It is an arithmetic number, because the mean of its divisors is an integer number (1631340).

Almost surely, 238853810 is an apocalyptic number.

38853810 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 38853810, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52202880).

38853810 is an abundant number, since it is smaller than the sum of its proper divisors (65551950).

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

38853810 is a wasteful number, since it uses less digits than its factorization.

38853810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1120 (or 1114 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 38853810 is about 6233.2824418600. The cubic root of 38853810 is about 338.6968862319.

The spelling of 38853810 in words is "thirty-eight million, eight hundred fifty-three thousand, eight hundred ten".

Divisors: 1 2 3 5 6 9 10 15 18 27 30 45 54 90 135 151 270 302 453 755 906 953 1359 1510 1906 2265 2718 2859 4077 4530 4765 5718 6795 8154 8577 9530 13590 14295 17154 20385 25731 28590 40770 42885 51462 85770 128655 143903 257310 287806 431709 719515 863418 1295127 1439030 2158545 2590254 3885381 4317090 6475635 7770762 12951270 19426905 38853810