156138408 has 64 divisors (see below), whose sum is σ = 440232000. Its totient is φ = 51264576.

The previous prime is 156138397. The next prime is 156138419. The reversal of 156138408 is 804831651.

156138408 is nontrivially palindromic in base 11.

It is an interprime number because it is at equal distance from previous prime (156138397) and next prime (156138419).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9078 + ... + 19866.

It is an arithmetic number, because the mean of its divisors is an integer number (6878625).

Almost surely, 2^156138408 is an apocalyptic number.

156138408 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 156138408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220116000).

156138408 is an abundant number, since it is smaller than the sum of its proper divisors (284093592).

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

156138408 is a wasteful number, since it uses less digits than its factorization.

156138408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10871 (or 10861 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 156138408 is about 12495.5355227377. The cubic root of 156138408 is about 538.4804192103.

The spelling of 156138408 in words is "one hundred fifty-six million, one hundred thirty-eight thousand, four hundred eight".