38720412 has 36 divisors (see below), whose sum is σ = 98103096. Its totient is φ = 12876960.

The previous prime is 38720387. The next prime is 38720417. The reversal of 38720412 is 21402783.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38720417) 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, 19087 + ... + 21017.

It is an arithmetic number, because the mean of its divisors is an integer number (2725086).

Almost surely, 2^38720412 is an apocalyptic number.

It is an amenable number.

38720412 is an abundant number, since it is smaller than the sum of its proper divisors (59382684).

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

38720412 is a wasteful number, since it uses less digits than its factorization.

38720412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2498 (or 2493 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 38720412 is about 6222.5727798074. The cubic root of 38720412 is about 338.3088222406.

The spelling of 38720412 in words is "thirty-eight million, seven hundred twenty thousand, four hundred twelve".