38490912 has 36 divisors (see below), whose sum is σ = 109459350. Its totient is φ = 12830208.

The previous prime is 38490911. The next prime is 38490913. The reversal of 38490912 is 21909483.

It is an interprime number because it is at equal distance from previous prime (38490911) and next prime (38490913).

It can be written as a sum of positive squares in only one way, i.e., 38489616 + 1296 = 6204^2 + 36^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38490911) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 66537 + ... + 67112.

Almost surely, 2^38490912 is an apocalyptic number.

38490912 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

38490912 is an abundant number, since it is smaller than the sum of its proper divisors (70968438).

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

38490912 is a wasteful number, since it uses less digits than its factorization.

38490912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133665 (or 133654 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 38490912 is about 6204.1044478635. The cubic root of 38490912 is about 337.6390998641.

The spelling of 38490912 in words is "thirty-eight million, four hundred ninety thousand, nine hundred twelve".