38518992 has 30 divisors (see below), whose sum is σ = 107800082. Its totient is φ = 12839616.

The previous prime is 38518979. The next prime is 38518993. The reversal of 38518992 is 29981583.

It is a happy number.

38518992 is a `hidden beast` number, since 385 + 189 + 92 = 666.

It can be written as a sum of positive squares in only one way, i.e., 20575296 + 17943696 = 4536^2 + 4236^2 .

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38518993) 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, 133603 + ... + 133890.

Almost surely, 2^38518992 is an apocalyptic number.

It is an amenable number.

38518992 is an abundant number, since it is smaller than the sum of its proper divisors (69281090).

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

38518992 is a wasteful number, since it uses less digits than its factorization.

38518992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267507 (or 267498 counting only the distinct ones).

The product of its digits is 155520, while the sum is 45.

The square root of 38518992 is about 6206.3670532768. The cubic root of 38518992 is about 337.7211850530.

The spelling of 38518992 in words is "thirty-eight million, five hundred eighteen thousand, nine hundred ninety-two".