38687355 has 32 divisors (see below), whose sum is σ = 78604800. Its totient is φ = 17685216.

The previous prime is 38687351. The next prime is 38687371. The reversal of 38687355 is 55378683.

It is not a de Polignac number, because 38687355 - 2² = 38687351 is a prime.

It is a super-2 number, since 2×38687355² = 2993422873792050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 38687355.

It is not an unprimeable number, because it can be changed into a prime (38687351) 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, 19525 + ... + 21414.

It is an arithmetic number, because the mean of its divisors is an integer number (2456400).

Almost surely, 2^38687355 is an apocalyptic number.

38687355 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

38687355 is an abundant number, since it is smaller than the sum of its proper divisors (39917445).

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

38687355 is a wasteful number, since it uses less digits than its factorization.

38687355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40960 (or 40954 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The square root of 38687355 is about 6219.9159962173. The cubic root of 38687355 is about 338.2125193843.

The spelling of 38687355 in words is "thirty-eight million, six hundred eighty-seven thousand, three hundred fifty-five".