139315680 has 384 divisors, whose sum is σ = 592220160. Its totient is φ = 29859840.

The previous prime is 139315621. The next prime is 139315691. The reversal of 139315680 is 86513931.

It is a happy number.

139315680 is a `hidden beast` number, since 1 + 3 + 93 + 1 + 568 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 513945 + ... + 514215.

It is an arithmetic number, because the mean of its divisors is an integer number (1542240).

Almost surely, 2^139315680 is an apocalyptic number.

139315680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139315680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (296110080).

139315680 is an abundant number, since it is smaller than the sum of its proper divisors (452904480).

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

139315680 is a wasteful number, since it uses less digits than its factorization.

139315680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319 (or 305 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 139315680 is about 11803.2063440406. The cubic root of 139315680 is about 518.4019975918.

The spelling of 139315680 in words is "one hundred thirty-nine million, three hundred fifteen thousand, six hundred eighty".