139515268 has 12 divisors (see below), whose sum is σ = 244737360. Its totient is φ = 69590312.

The previous prime is 139515253. The next prime is 139515269. The reversal of 139515268 is 862515931.

139515268 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×139515268² = 38929020010223648, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 139515268.

It is not an unprimeable number, because it can be changed into a prime (139515269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39946 + ... + 43297.

It is an arithmetic number, because the mean of its divisors is an integer number (20394780).

Almost surely, 2^139515268 is an apocalyptic number.

It is an amenable number.

139515268 is a deficient number, since it is larger than the sum of its proper divisors (105222092).

139515268 is a wasteful number, since it uses less digits than its factorization.

139515268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83666 (or 83664 counting only the distinct ones).

The product of its digits is 64800, while the sum is 40.

The square root of 139515268 is about 11811.6581393130. The cubic root of 139515268 is about 518.6494391031.

The spelling of 139515268 in words is "one hundred thirty-nine million, five hundred fifteen thousand, two hundred sixty-eight".