156028389 has 32 divisors (see below), whose sum is σ = 237938688. Its totient is φ = 90024000.

The previous prime is 156028387. The next prime is 156028403. The reversal of 156028389 is 983820651.

It is not a de Polignac number, because 156028389 - 2¹ = 156028387 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 156028389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156028387) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 235719 + ... + 236379.

It is an arithmetic number, because the mean of its divisors is an integer number (7435584).

Almost surely, 2^156028389 is an apocalyptic number.

It is an amenable number.

156028389 is a deficient number, since it is larger than the sum of its proper divisors (81910299).

156028389 is a wasteful number, since it uses less digits than its factorization.

156028389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1009.

The product of its (nonzero) digits is 103680, while the sum is 42.

The square root of 156028389 is about 12491.1324146372. The cubic root of 156028389 is about 538.3539139338.

The spelling of 156028389 in words is "one hundred fifty-six million, twenty-eight thousand, three hundred eighty-nine".