139287204 has 81 divisors (see below), whose sum is σ = 411033441. Its totient is φ = 39654720.

The previous prime is 139287199. The next prime is 139287221. The reversal of 139287204 is 402782931.

The square root of 139287204 is 11802.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 94128804 + 45158400 = 9702^2 + 6720^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 495544 + ... + 495824.

Almost surely, 2^139287204 is an apocalyptic number.

139287204 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

139287204 is the 11802-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139287204

139287204 is an abundant number, since it is smaller than the sum of its proper divisors (271746237).

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

139287204 is a wasteful number, since it uses less digits than its factorization.

139287204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586 (or 293 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The cubic root of 139287204 is about 518.3666748839.

Multiplying 139287204 by its sum of digits (36), we get a square (5014339344 = 70812²).

139287204 divided by its sum of digits (36) gives a square (3869089 = 1967²).

The spelling of 139287204 in words is "one hundred thirty-nine million, two hundred eighty-seven thousand, two hundred four".