139257360 has 160 divisors (see below), whose sum is σ = 523359360. Its totient is φ = 33753600.

The previous prime is 139257359. The next prime is 139257373. The reversal of 139257360 is 63752931.

It is a super-2 number, since 2×139257360² = 38785224628339200, which contains 22 as substring.

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 31 ways as a sum of consecutive naturals, for example, 20830 + ... + 26690.

It is an arithmetic number, because the mean of its divisors is an integer number (3270996).

Almost surely, 2^139257360 is an apocalyptic number.

139257360 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 139257360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261679680).

139257360 is an abundant number, since it is smaller than the sum of its proper divisors (384102000).

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

139257360 is a wasteful number, since it uses less digits than its factorization.

139257360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5894 (or 5882 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 36.

The square root of 139257360 is about 11800.7355702939. The cubic root of 139257360 is about 518.3296500900.

The spelling of 139257360 in words is "one hundred thirty-nine million, two hundred fifty-seven thousand, three hundred sixty".