139845672 has 96 divisors (see below), whose sum is σ = 407819880. Its totient is φ = 43130880.

The previous prime is 139845661. The next prime is 139845679. The reversal of 139845672 is 276548931.

139845672 is a `hidden beast` number, since 1 + 3 + 9 + 84 + 567 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 59814756 + 80030916 = 7734^2 + 8946^2 .

It is not an unprimeable number, because it can be changed into a prime (139845679) 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, 73728 + ... + 75600.

Almost surely, 2^139845672 is an apocalyptic number.

139845672 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 139845672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (203909940).

139845672 is an abundant number, since it is smaller than the sum of its proper divisors (267974208).

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

139845672 is a wasteful number, since it uses less digits than its factorization.

139845672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1963 (or 1956 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 139845672 is about 11825.6362196712. The cubic root of 139845672 is about 519.0585430748.

The spelling of 139845672 in words is "one hundred thirty-nine million, eight hundred forty-five thousand, six hundred seventy-two".