38662920 has 80 divisors (see below), whose sum is σ = 129961260. Its totient is φ = 10309248.

The previous prime is 38662909. The next prime is 38662933. The reversal of 38662920 is 2926683.

38662920 is a `hidden beast` number, since 3 + 8 + 6 + 629 + 20 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 38118276 + 544644 = 6174^2 + 738^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2727 + ... + 9206.

Almost surely, 2^38662920 is an apocalyptic number.

38662920 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38662920 is an abundant number, since it is smaller than the sum of its proper divisors (91298340).

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

38662920 is a wasteful number, since it uses less digits than its factorization.

38662920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11956 (or 11943 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 38662920 is about 6217.9514311387. The cubic root of 38662920 is about 338.1412991848.

It can be divided in two parts, 3866 and 2920, that added together give a triangular number (6786 = T₁₁₆).

The spelling of 38662920 in words is "thirty-eight million, six hundred sixty-two thousand, nine hundred twenty".