38021730 has 32 divisors (see below), whose sum is σ = 91494144. Its totient is φ = 10112256.

The previous prime is 38021689. The next prime is 38021743. The reversal of 38021730 is 3712083.

It is a self number, because there is not a number n which added to its sum of digits gives 38021730.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11527 + ... + 14453.

It is an arithmetic number, because the mean of its divisors is an integer number (2859192).

Almost surely, 2^38021730 is an apocalyptic number.

38021730 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

38021730 is an abundant number, since it is smaller than the sum of its proper divisors (53472414).

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

38021730 is a wasteful number, since it uses less digits than its factorization.

38021730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3370.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 38021730 is about 6166.1762868085. The cubic root of 38021730 is about 336.2616124383.

The spelling of 38021730 in words is "thirty-eight million, twenty-one thousand, seven hundred thirty".