156440530 has 32 divisors (see below), whose sum is σ = 285222528. Its totient is φ = 61776000.

The previous prime is 156440497. The next prime is 156440561. The reversal of 156440530 is 35044651.

156440530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 472465 + ... + 472795.

It is an arithmetic number, because the mean of its divisors is an integer number (8913204).

Almost surely, 2^156440530 is an apocalyptic number.

156440530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

156440530 is a deficient number, since it is larger than the sum of its proper divisors (128781998).

156440530 is a wasteful number, since it uses less digits than its factorization.

156440530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 156440530 is about 12507.6188781079. The cubic root of 156440530 is about 538.8275086185.

The spelling of 156440530 in words is "one hundred fifty-six million, four hundred forty thousand, five hundred thirty".