156420472 has 32 divisors (see below), whose sum is σ = 319672080. Its totient is φ = 71320320.

The previous prime is 156420469. The next prime is 156420503. The reversal of 156420472 is 274024651.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 429 + ... + 17692.

Almost surely, 2^156420472 is an apocalyptic number.

It is an amenable number.

156420472 is an abundant number, since it is smaller than the sum of its proper divisors (163251608).

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

156420472 is a wasteful number, since it uses less digits than its factorization.

156420472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18223 (or 18219 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 156420472 is about 12506.8170211289. The cubic root of 156420472 is about 538.8044790705.

The spelling of 156420472 in words is "one hundred fifty-six million, four hundred twenty thousand, four hundred seventy-two".