137321792 has 56 divisors (see below), whose sum is σ = 284195520. Its totient is φ = 65776640.

The previous prime is 137321791. The next prime is 137321809. The reversal of 137321792 is 297123731.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137321791) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154373 + ... + 155259.

It is an arithmetic number, because the mean of its divisors is an integer number (5074920).

Almost surely, 2^137321792 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 137321792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142097760).

137321792 is an abundant number, since it is smaller than the sum of its proper divisors (146873728).

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

137321792 is an equidigital number, since it uses as much as digits as its factorization.

137321792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 999 (or 989 counting only the distinct ones).

The product of its digits is 15876, while the sum is 35.

The square root of 137321792 is about 11718.4381211832. The cubic root of 137321792 is about 515.9169788111.

The spelling of 137321792 in words is "one hundred thirty-seven million, three hundred twenty-one thousand, seven hundred ninety-two".