139734720 has 196 divisors, whose sum is σ = 499719600. Its totient is φ = 37200384.

The previous prime is 139734689. The next prime is 139734737. The reversal of 139734720 is 27437931.

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 27 ways as a sum of consecutive naturals, for example, 232981 + ... + 233579.

Almost surely, 2^139734720 is an apocalyptic number.

139734720 is a gapful number since it is divisible by the number (10) 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 139734720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249859800).

139734720 is an abundant number, since it is smaller than the sum of its proper divisors (359984880).

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

139734720 is an frugal number, since it uses more digits than its factorization.

139734720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634 (or 609 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 36.

The square root of 139734720 is about 11820.9441247305. The cubic root of 139734720 is about 518.9212349981.

The spelling of 139734720 in words is "one hundred thirty-nine million, seven hundred thirty-four thousand, seven hundred twenty".