38381620 has 24 divisors (see below), whose sum is σ = 81807264. Its totient is φ = 15122976.

The previous prime is 38381599. The next prime is 38381621. The reversal of 38381620 is 2618383.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38381621) 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, 12982 + ... + 15661.

It is an arithmetic number, because the mean of its divisors is an integer number (3408636).

Almost surely, 2^38381620 is an apocalyptic number.

It is an amenable number.

38381620 is an abundant number, since it is smaller than the sum of its proper divisors (43425644).

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

38381620 is a wasteful number, since it uses less digits than its factorization.

38381620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28719 (or 28717 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 38381620 is about 6195.2901465549. The cubic root of 38381620 is about 337.3192301262.

The spelling of 38381620 in words is "thirty-eight million, three hundred eighty-one thousand, six hundred twenty".