38031630 has 64 divisors (see below), whose sum is σ = 112347648. Its totient is φ = 8023680.

The previous prime is 38031589. The next prime is 38031659. The reversal of 38031630 is 3613083.

It is a self number, because there is not a number n which added to its sum of digits gives 38031630.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4236 + ... + 9695.

It is an arithmetic number, because the mean of its divisors is an integer number (1755432).

Almost surely, 2^38031630 is an apocalyptic number.

38031630 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

38031630 is an abundant number, since it is smaller than the sum of its proper divisors (74316018).

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

38031630 is a wasteful number, since it uses less digits than its factorization.

38031630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13961.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 38031630 is about 6166.9790010993. The cubic root of 38031630 is about 336.2907948828.

The spelling of 38031630 in words is "thirty-eight million, thirty-one thousand, six hundred thirty".