139577628 has 12 divisors (see below), whose sum is σ = 325681160. Its totient is φ = 46525872.

The previous prime is 139577623. The next prime is 139577663. The reversal of 139577628 is 826775931.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139577621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5815723 + ... + 5815746.

Almost surely, 2^139577628 is an apocalyptic number.

It is an amenable number.

139577628 is an abundant number, since it is smaller than the sum of its proper divisors (186103532).

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

139577628 is a wasteful number, since it uses less digits than its factorization.

139577628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11631476 (or 11631474 counting only the distinct ones).

The product of its digits is 635040, while the sum is 48.

The square root of 139577628 is about 11814.2976092530. The cubic root of 139577628 is about 518.7267022391.

The spelling of 139577628 in words is "one hundred thirty-nine million, five hundred seventy-seven thousand, six hundred twenty-eight".