38749660 has 24 divisors (see below), whose sum is σ = 82184256. Its totient is φ = 15345600.

The previous prime is 38749649. The next prime is 38749691. The reversal of 38749660 is 6694783.

It is a happy number.

It is a congruent number.

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, 7572 + ... + 11611.

It is an arithmetic number, because the mean of its divisors is an integer number (3424344).

Almost surely, 2^38749660 is an apocalyptic number.

It is an amenable number.

38749660 is an abundant number, since it is smaller than the sum of its proper divisors (43434596).

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

38749660 is a wasteful number, since it uses less digits than its factorization.

38749660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19293 (or 19291 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 38749660 is about 6224.9224894773. The cubic root of 38749660 is about 338.3939828881.

The spelling of 38749660 in words is "thirty-eight million, seven hundred forty-nine thousand, six hundred sixty".