38691216 has 40 divisors (see below), whose sum is σ = 111059360. Its totient is φ = 12896928.

The previous prime is 38691209. The next prime is 38691251. The reversal of 38691216 is 61219683.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

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, 44350 + ... + 45213.

It is an arithmetic number, because the mean of its divisors is an integer number (2776484).

Almost surely, 2^38691216 is an apocalyptic number.

38691216 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

38691216 is an abundant number, since it is smaller than the sum of its proper divisors (72368144).

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

38691216 is a wasteful number, since it uses less digits than its factorization.

38691216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89580 (or 89568 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 38691216 is about 6220.2263624405. The cubic root of 38691216 is about 338.2237702189.

The spelling of 38691216 in words is "thirty-eight million, six hundred ninety-one thousand, two hundred sixteen".