38720836 has 24 divisors (see below), whose sum is σ = 84482496. Its totient is φ = 15085920.

The previous prime is 38720819. The next prime is 38720837. The reversal of 38720836 is 63802783.

It is a junction number, because it is equal to n+sod(n) for n = 38720795 and 38720804.

It is not an unprimeable number, because it can be changed into a prime (38720837) 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, 62551 + ... + 63166.

It is an arithmetic number, because the mean of its divisors is an integer number (3520104).

Almost surely, 2^38720836 is an apocalyptic number.

It is an amenable number.

38720836 is an abundant number, since it is smaller than the sum of its proper divisors (45761660).

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

38720836 is a wasteful number, since it uses less digits than its factorization.

38720836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125739 (or 125737 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 38720836 is about 6222.6068492232. The cubic root of 38720836 is about 338.3100570968.

The spelling of 38720836 in words is "thirty-eight million, seven hundred twenty thousand, eight hundred thirty-six".