156390444 has 144 divisors (see below), whose sum is σ = 482227200. Its totient is φ = 41741568.

The previous prime is 156390433. The next prime is 156390491. The reversal of 156390444 is 444093651.

156390444 is a `hidden beast` number, since 1 + 563 + 90 + 4 + 4 + 4 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 156390399 and 156390408.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 425949 + ... + 426315.

It is an arithmetic number, because the mean of its divisors is an integer number (3348800).

Almost surely, 2^156390444 is an apocalyptic number.

156390444 is a gapful number since it is divisible by the number (14) 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 156390444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (241113600).

156390444 is an abundant number, since it is smaller than the sum of its proper divisors (325836756).

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

156390444 is a wasteful number, since it uses less digits than its factorization.

156390444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492 (or 487 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 156390444 is about 12505.6164981979. The cubic root of 156390444 is about 538.7699988090.

The spelling of 156390444 in words is "one hundred fifty-six million, three hundred ninety thousand, four hundred forty-four".