38772855 has 96 divisors (see below), whose sum is σ = 78960960. Its totient is φ = 17418240.

The previous prime is 38772829. The next prime is 38772857. The reversal of 38772855 is 55827783.

It is not a de Polignac number, because 38772855 - 2⁵ = 38772823 is a prime.

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 38772855.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38772857) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 531099 + ... + 531171.

It is an arithmetic number, because the mean of its divisors is an integer number (822510).

Almost surely, 2^38772855 is an apocalyptic number.

38772855 is an abundant number, since it is smaller than the sum of its proper divisors (40188105).

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

38772855 is a wasteful number, since it uses less digits than its factorization.

38772855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161 (or 158 counting only the distinct ones).

The product of its digits is 470400, while the sum is 45.

The square root of 38772855 is about 6226.7852861649. The cubic root of 38772855 is about 338.4614887092.

It can be divided in two parts, 387728 and 55, that added together give a palindrome (387783).

The spelling of 38772855 in words is "thirty-eight million, seven hundred seventy-two thousand, eight hundred fifty-five".