38811855 has 16 divisors (see below), whose sum is σ = 62329824. Its totient is φ = 20622720.

The previous prime is 38811823. The next prime is 38811859. The reversal of 38811855 is 55811883.

It is not a de Polignac number, because 38811855 - 2⁵ = 38811823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38811859) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 516 + ... + 8825.

It is an arithmetic number, because the mean of its divisors is an integer number (3895614).

Almost surely, 2^38811855 is an apocalyptic number.

38811855 is a deficient number, since it is larger than the sum of its proper divisors (23517969).

38811855 is a wasteful number, since it uses less digits than its factorization.

38811855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9626.

The product of its digits is 38400, while the sum is 39.

The square root of 38811855 is about 6229.9161310567. The cubic root of 38811855 is about 338.5749321200.

The spelling of 38811855 in words is "thirty-eight million, eight hundred eleven thousand, eight hundred fifty-five".