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38831480 = 235970787
BaseRepresentation
bin1001010000100…
…0010101111000
32201001211202222
42110020111320
534420101410
63504143212
7651030212
oct224102570
981054688
1038831480
111aa12736
1211007b08
138077a0c
14522b5b2
153620955
hex2508578

38831480 has 16 divisors (see below), whose sum is σ = 87370920. Its totient is φ = 15532576.

The previous prime is 38831479. The next prime is 38831483. The reversal of 38831480 is 8413883.

It is a self number, because there is not a number n which added to its sum of digits gives 38831480.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38831483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 485354 + ... + 485433.

Almost surely, 238831480 is an apocalyptic number.

It is an amenable number.

38831480 is an abundant number, since it is smaller than the sum of its proper divisors (48539440).

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

38831480 is a wasteful number, since it uses less digits than its factorization.

38831480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 970798 (or 970794 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 38831480 is about 6231.4909933338. The cubic root of 38831480 is about 338.6319886855.

The spelling of 38831480 in words is "thirty-eight million, eight hundred thirty-one thousand, four hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 970787 1941574 3883148 4853935 7766296 9707870 19415740 38831480