156223620 has 192 divisors, whose sum is σ = 570984960. Its totient is φ = 34712064.

The previous prime is 156223619. The next prime is 156223631. The reversal of 156223620 is 26322651.

156223620 is a `hidden beast` number, since 1 + 5 + 622 + 36 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 139302 + ... + 140418.

It is an arithmetic number, because the mean of its divisors is an integer number (2973880).

Almost surely, 2^156223620 is an apocalyptic number.

156223620 is a gapful number since it is divisible by the number (10) 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 156223620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (285492480).

156223620 is an abundant number, since it is smaller than the sum of its proper divisors (414761340).

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

156223620 is a wasteful number, since it uses less digits than its factorization.

156223620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1179 (or 1171 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 156223620 is about 12498.9447554584. The cubic root of 156223620 is about 538.5783593422.

The spelling of 156223620 in words is "one hundred fifty-six million, two hundred twenty-three thousand, six hundred twenty".