138413208 has 16 divisors (see below), whose sum is σ = 346033080. Its totient is φ = 46137728.

The previous prime is 138413179. The next prime is 138413221. The reversal of 138413208 is 802314831.

It is a super-2 number, since 2×138413208² = 38316432297702528, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2883585 + ... + 2883632.

Almost surely, 2^138413208 is an apocalyptic number.

It is an amenable number.

138413208 is an abundant number, since it is smaller than the sum of its proper divisors (207619872).

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

138413208 is a wasteful number, since it uses less digits than its factorization.

138413208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5767226 (or 5767222 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 138413208 is about 11764.9142793307. The cubic root of 138413208 is about 517.2801876328.

The spelling of 138413208 in words is "one hundred thirty-eight million, four hundred thirteen thousand, two hundred eight".