38772140 has 24 divisors (see below), whose sum is σ = 88823952. Its totient is φ = 14098880.

The previous prime is 38772137. The next prime is 38772157. The reversal of 38772140 is 4127783.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 38772097 and 38772106.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87899 + ... + 88338.

It is an arithmetic number, because the mean of its divisors is an integer number (3700998).

Almost surely, 2^38772140 is an apocalyptic number.

It is an amenable number.

38772140 is an abundant number, since it is smaller than the sum of its proper divisors (50051812).

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

38772140 is a wasteful number, since it uses less digits than its factorization.

38772140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176257 (or 176255 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 38772140 is about 6226.7278726471. The cubic root of 38772140 is about 338.4594082034.

It can be divided in two parts, 387 and 72140, that added together give a palindrome (72527).

The spelling of 38772140 in words is "thirty-eight million, seven hundred seventy-two thousand, one hundred forty".