139404672 has 256 divisors, whose sum is σ = 474912000. Its totient is φ = 39813120.

The previous prime is 139404623. The next prime is 139404697. The reversal of 139404672 is 276404931.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 722208 + ... + 722400.

It is an arithmetic number, because the mean of its divisors is an integer number (1855125).

Almost surely, 2^139404672 is an apocalyptic number.

139404672 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 139404672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237456000).

139404672 is an abundant number, since it is smaller than the sum of its proper divisors (335507328).

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

139404672 is a wasteful number, since it uses less digits than its factorization.

139404672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246 (or 228 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 139404672 is about 11806.9755653173. The cubic root of 139404672 is about 518.5123556194.

The spelling of 139404672 in words is "one hundred thirty-nine million, four hundred four thousand, six hundred seventy-two".