139682880 has 280 divisors, whose sum is σ = 527764248. Its totient is φ = 34947072.

The previous prime is 139682843. The next prime is 139682911. The reversal of 139682880 is 88286931.

It can be written as a sum of positive squares in 4 ways, for example, as 5308416 + 134374464 = 2304^2 + 11592^2 .

It is a super-2 number, since 2×139682880² = 39022613930188800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 440482 + ... + 440798.

Almost surely, 2^139682880 is an apocalyptic number.

139682880 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 139682880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (263882124).

139682880 is an abundant number, since it is smaller than the sum of its proper divisors (388081368).

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

139682880 is a wasteful number, since it uses less digits than its factorization.

139682880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363 (or 344 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 139682880 is about 11818.7512030671. The cubic root of 139682880 is about 518.8570557587.

The spelling of 139682880 in words is "one hundred thirty-nine million, six hundred eighty-two thousand, eight hundred eighty".