38255865 has 32 divisors (see below), whose sum is σ = 65753856. Its totient is φ = 18923520.

The previous prime is 38255827. The next prime is 38255879. The reversal of 38255865 is 56855283.

It is not a de Polignac number, because 38255865 - 2¹³ = 38247673 is a prime.

It is a super-2 number, since 2×38255865² = 2927022413796450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17049 + ... + 19161.

It is an arithmetic number, because the mean of its divisors is an integer number (2054808).

Almost surely, 2^38255865 is an apocalyptic number.

It is an amenable number.

38255865 is a deficient number, since it is larger than the sum of its proper divisors (27497991).

38255865 is a wasteful number, since it uses less digits than its factorization.

38255865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2209.

The product of its digits is 288000, while the sum is 42.

The square root of 38255865 is about 6185.1325773988. The cubic root of 38255865 is about 336.9504251906.

The spelling of 38255865 in words is "thirty-eight million, two hundred fifty-five thousand, eight hundred sixty-five".