38556140 has 36 divisors (see below), whose sum is σ = 94189536. Its totient is φ = 13218912.

The previous prime is 38556137. The next prime is 38556143. The reversal of 38556140 is 4165583.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (38556137) and next prime (38556143).

It is a junction number, because it is equal to n+sod(n) for n = 38556097 and 38556106.

It is not an unprimeable number, because it can be changed into a prime (38556143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18692 + ... + 20651.

It is an arithmetic number, because the mean of its divisors is an integer number (2616376).

Almost surely, 2^38556140 is an apocalyptic number.

It is an amenable number.

38556140 is an abundant number, since it is smaller than the sum of its proper divisors (55633396).

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

38556140 is a wasteful number, since it uses less digits than its factorization.

38556140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39366 (or 39357 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 38556140 is about 6209.3590651532. The cubic root of 38556140 is about 337.8297171047.

The spelling of 38556140 in words is "thirty-eight million, five hundred fifty-six thousand, one hundred forty".