139732320 has 288 divisors, whose sum is σ = 552611808. Its totient is φ = 29417472.

The previous prime is 139732303. The next prime is 139732321. The reversal of 139732320 is 23237931.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139732321) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 305532 + ... + 305988.

It is an arithmetic number, because the mean of its divisors is an integer number (1918791).

Almost surely, 2^139732320 is an apocalyptic number.

139732320 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 139732320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (276305904).

139732320 is an abundant number, since it is smaller than the sum of its proper divisors (412879488).

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

139732320 is a wasteful number, since it uses less digits than its factorization.

139732320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502 (or 487 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 30.

The square root of 139732320 is about 11820.8426095605. The cubic root of 139732320 is about 518.9182640875.

The spelling of 139732320 in words is "one hundred thirty-nine million, seven hundred thirty-two thousand, three hundred twenty".