38772818 has 54 divisors (see below), whose sum is σ = 73863279. Its totient is φ = 15216768.

The previous prime is 38772793. The next prime is 38772821. The reversal of 38772818 is 81827783.

It can be written as a sum of positive squares in 5 ways, for example, as 38725729 + 47089 = 6223^2 + 217^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=4403.

It is a super-3 number, since 3×38772818³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1047896 + ... + 1047932.

Almost surely, 2^38772818 is an apocalyptic number.

38772818 is a deficient number, since it is larger than the sum of its proper divisors (35090461).

38772818 is a wasteful number, since it uses less digits than its factorization.

38772818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124 (or 63 counting only the distinct ones).

The product of its digits is 150528, while the sum is 44.

The square root of 38772818 is about 6226.7823151287. The cubic root of 38772818 is about 338.4613810473.

The spelling of 38772818 in words is "thirty-eight million, seven hundred seventy-two thousand, eight hundred eighteen".