139028472 has 96 divisors (see below), whose sum is σ = 432432000. Its totient is φ = 39908160.

The previous prime is 139028467. The next prime is 139028479. The reversal of 139028472 is 274820931.

139028472 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139028479) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10429 + ... + 19667.

It is an arithmetic number, because the mean of its divisors is an integer number (4504500).

Almost surely, 2^139028472 is an apocalyptic number.

139028472 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 139028472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216216000).

139028472 is an abundant number, since it is smaller than the sum of its proper divisors (293403528).

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

139028472 is a wasteful number, since it uses less digits than its factorization.

139028472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9281 (or 9274 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 139028472 is about 11791.0335424847. The cubic root of 139028472 is about 518.0455131121.

The spelling of 139028472 in words is "one hundred thirty-nine million, twenty-eight thousand, four hundred seventy-two".