139732780 has 24 divisors (see below), whose sum is σ = 320115600. Its totient is φ = 50811840.

The previous prime is 139732771. The next prime is 139732781. The reversal of 139732780 is 87237931.

It is not an unprimeable number, because it can be changed into a prime (139732781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 317355 + ... + 317794.

It is an arithmetic number, because the mean of its divisors is an integer number (13338150).

Almost surely, 2^139732780 is an apocalyptic number.

139732780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139732780 is an abundant number, since it is smaller than the sum of its proper divisors (180382820).

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

139732780 is a wasteful number, since it uses less digits than its factorization.

139732780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635169 (or 635167 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 139732780 is about 11820.8620667022. The cubic root of 139732780 is about 518.9188335147.

The spelling of 139732780 in words is "one hundred thirty-nine million, seven hundred thirty-two thousand, seven hundred eighty".