138450264 has 32 divisors (see below), whose sum is σ = 364344000. Its totient is φ = 43720992.

The previous prime is 138450253. The next prime is 138450281. The reversal of 138450264 is 462054831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151354 + ... + 152265.

It is an arithmetic number, because the mean of its divisors is an integer number (11385750).

Almost surely, 2^138450264 is an apocalyptic number.

It is an amenable number.

138450264 is an abundant number, since it is smaller than the sum of its proper divisors (225893736).

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

138450264 is a wasteful number, since it uses less digits than its factorization.

138450264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303647 (or 303643 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 138450264 is about 11766.4890260434. The cubic root of 138450264 is about 517.3263456178.

The spelling of 138450264 in words is "one hundred thirty-eight million, four hundred fifty thousand, two hundred sixty-four".