138452416 has 28 divisors (see below), whose sum is σ = 277474680. Its totient is φ = 68537600.

The previous prime is 138452401. The next prime is 138452423. The reversal of 138452416 is 614254831.

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, 4246 + ... + 17173.

It is an arithmetic number, because the mean of its divisors is an integer number (9909810).

Almost surely, 2^138452416 is an apocalyptic number.

138452416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

138452416 is an abundant number, since it is smaller than the sum of its proper divisors (139022264).

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

138452416 is a wasteful number, since it uses less digits than its factorization.

138452416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21532 (or 21522 counting only the distinct ones).

The product of its digits is 23040, while the sum is 34.

The square root of 138452416 is about 11766.5804718278. The cubic root of 138452416 is about 517.3290259558.

It can be divided in two parts, 13845 and 2416, that added together give a palindrome (16261).

The spelling of 138452416 in words is "one hundred thirty-eight million, four hundred fifty-two thousand, four hundred sixteen".