139967328 has 48 divisors (see below), whose sum is σ = 383394816. Its totient is φ = 44626560.

The previous prime is 139967309. The next prime is 139967371. The reversal of 139967328 is 823769931.

139967328 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29488 + ... + 33903.

It is an arithmetic number, because the mean of its divisors is an integer number (7987392).

Almost surely, 2^139967328 is an apocalyptic number.

It is an amenable number.

139967328 is an abundant number, since it is smaller than the sum of its proper divisors (243427488).

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

139967328 is a wasteful number, since it uses less digits than its factorization.

139967328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63427 (or 63419 counting only the distinct ones).

The product of its digits is 489888, while the sum is 48.

The square root of 139967328 is about 11830.7788416486. The cubic root of 139967328 is about 519.2090143837.

The spelling of 139967328 in words is "one hundred thirty-nine million, nine hundred sixty-seven thousand, three hundred twenty-eight".