139673232 has 60 divisors (see below), whose sum is σ = 398288124. Its totient is φ = 45676800.

The previous prime is 139673213. The next prime is 139673257. The reversal of 139673232 is 232376931.

It can be written as a sum of positive squares in 2 ways, for example, as 39992976 + 99680256 = 6324^2 + 9984^2 .

It is a super-2 number, since 2×139673232² = 39017223474651648, 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 11 ways as a sum of consecutive naturals, for example, 1519 + ... + 16782.

Almost surely, 2^139673232 is an apocalyptic number.

139673232 is a gapful number since it is divisible by the number (12) 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 139673232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (199144062).

139673232 is an abundant number, since it is smaller than the sum of its proper divisors (258614892).

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

139673232 is a wasteful number, since it uses less digits than its factorization.

139673232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18368 (or 18359 counting only the distinct ones).

The product of its digits is 40824, while the sum is 36.

The square root of 139673232 is about 11818.3430310683. The cubic root of 139673232 is about 518.8451095366.

The spelling of 139673232 in words is "one hundred thirty-nine million, six hundred seventy-three thousand, two hundred thirty-two".