38699980 has 24 divisors (see below), whose sum is σ = 88658640. Its totient is φ = 14072640.

The previous prime is 38699971. The next prime is 38699987. The reversal of 38699980 is 8999683.

It is not an unprimeable number, because it can be changed into a prime (38699987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87735 + ... + 88174.

It is an arithmetic number, because the mean of its divisors is an integer number (3694110).

Almost surely, 2^38699980 is an apocalyptic number.

It is an amenable number.

38699980 is an abundant number, since it is smaller than the sum of its proper divisors (49958660).

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

38699980 is a wasteful number, since it uses less digits than its factorization.

38699980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175929 (or 175927 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 52.

The square root of 38699980 is about 6220.9307985220. The cubic root of 38699980 is about 338.2493054665.

The spelling of 38699980 in words is "thirty-eight million, six hundred ninety-nine thousand, nine hundred eighty".