38631930 has 16 divisors (see below), whose sum is σ = 92716704. Its totient is φ = 10301840.

The previous prime is 38631919. The next prime is 38631941. The reversal of 38631930 is 3913683.

It is an interprime number because it is at equal distance from previous prime (38631919) and next prime (38631941).

It is a junction number, because it is equal to n+sod(n) for n = 38631891 and 38631900.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 643836 + ... + 643895.

It is an arithmetic number, because the mean of its divisors is an integer number (5794794).

Almost surely, 2^38631930 is an apocalyptic number.

38631930 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

38631930 is an abundant number, since it is smaller than the sum of its proper divisors (54084774).

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

38631930 is a wasteful number, since it uses less digits than its factorization.

38631930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1287741.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 38631930 is about 6215.4589532874. The cubic root of 38631930 is about 338.0509300844.

The spelling of 38631930 in words is "thirty-eight million, six hundred thirty-one thousand, nine hundred thirty".