38013620 has 24 divisors (see below), whose sum is σ = 80277288. Its totient is φ = 15120000.

The previous prime is 38013617. The next prime is 38013629. The reversal of 38013620 is 2631083.

It can be written as a sum of positive squares in 4 ways, for example, as 583696 + 37429924 = 764^2 + 6118^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38013629) 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, 1631 + ... + 8870.

It is an arithmetic number, because the mean of its divisors is an integer number (3344887).

Almost surely, 2^38013620 is an apocalyptic number.

It is an amenable number.

38013620 is an abundant number, since it is smaller than the sum of its proper divisors (42263668).

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

38013620 is a wasteful number, since it uses less digits than its factorization.

38013620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10691 (or 10689 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 38013620 is about 6165.5186318752. The cubic root of 38013620 is about 336.2377026408.

The spelling of 38013620 in words is "thirty-eight million, thirteen thousand, six hundred twenty".