38678920 has 32 divisors (see below), whose sum is σ = 99460800. Its totient is φ = 13261248.

The previous prime is 38678911. The next prime is 38678921. The reversal of 38678920 is 2987683.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (38678921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68790 + ... + 69349.

It is an arithmetic number, because the mean of its divisors is an integer number (3108150).

Almost surely, 2^38678920 is an apocalyptic number.

It is an amenable number.

38678920 is an abundant number, since it is smaller than the sum of its proper divisors (60781880).

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

38678920 is a wasteful number, since it uses less digits than its factorization.

38678920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138157 (or 138153 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 38678920 is about 6219.2378954338. The cubic root of 38678920 is about 338.1879374508.

The spelling of 38678920 in words is "thirty-eight million, six hundred seventy-eight thousand, nine hundred twenty".