139752218 has 16 divisors (see below), whose sum is σ = 220099680. Its totient is φ = 66457776.

The previous prime is 139752203. The next prime is 139752227. The reversal of 139752218 is 812257931.

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, 14096 + ... + 21867.

It is an arithmetic number, because the mean of its divisors is an integer number (13756230).

Almost surely, 2^139752218 is an apocalyptic number.

139752218 is a deficient number, since it is larger than the sum of its proper divisors (80347462).

139752218 is a wasteful number, since it uses less digits than its factorization.

139752218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36061.

The product of its digits is 30240, while the sum is 38.

The square root of 139752218 is about 11821.6842285691. The cubic root of 139752218 is about 518.9428943843.

The spelling of 139752218 in words is "one hundred thirty-nine million, seven hundred fifty-two thousand, two hundred eighteen".