138202460 has 24 divisors (see below), whose sum is σ = 316609776. Its totient is φ = 50255360.

The previous prime is 138202459. The next prime is 138202481. The reversal of 138202460 is 64202831.

138202460 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 313877 + ... + 314316.

It is an arithmetic number, because the mean of its divisors is an integer number (13192074).

Almost surely, 2^138202460 is an apocalyptic number.

138202460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138202460 is an abundant number, since it is smaller than the sum of its proper divisors (178407316).

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

138202460 is a wasteful number, since it uses less digits than its factorization.

138202460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628213 (or 628211 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 138202460 is about 11755.9542360457. The cubic root of 138202460 is about 517.0175172741.

The spelling of 138202460 in words is "one hundred thirty-eight million, two hundred two thousand, four hundred sixty".