139668672 has 112 divisors (see below), whose sum is σ = 434230272. Its totient is φ = 39060480.

The previous prime is 139668653. The next prime is 139668689. The reversal of 139668672 is 276866931.

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

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, 24913 + ... + 29999.

It is an arithmetic number, because the mean of its divisors is an integer number (3877056).

Almost surely, 2^139668672 is an apocalyptic number.

139668672 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 139668672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217115136).

139668672 is an abundant number, since it is smaller than the sum of its proper divisors (294561600).

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

139668672 is a wasteful number, since it uses less digits than its factorization.

139668672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5126 (or 5116 counting only the distinct ones).

The product of its digits is 653184, while the sum is 48.

The square root of 139668672 is about 11818.1501090484. The cubic root of 139668672 is about 518.8394631207.

The spelling of 139668672 in words is "one hundred thirty-nine million, six hundred sixty-eight thousand, six hundred seventy-two".