139247310 has 32 divisors (see below), whose sum is σ = 335093760. Its totient is φ = 37032608.

The previous prime is 139247309. The next prime is 139247321. The reversal of 139247310 is 13742931.

It is a super-2 number, since 2×139247310² = 38779626684472200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5431 + ... + 17549.

It is an arithmetic number, because the mean of its divisors is an integer number (10471680).

Almost surely, 2^139247310 is an apocalyptic number.

139247310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139247310 is an abundant number, since it is smaller than the sum of its proper divisors (195846450).

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

139247310 is a wasteful number, since it uses less digits than its factorization.

139247310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12512.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 139247310 is about 11800.3097416975. The cubic root of 139247310 is about 518.3171807591.

The spelling of 139247310 in words is "one hundred thirty-nine million, two hundred forty-seven thousand, three hundred ten".