156744428 has 12 divisors (see below), whose sum is σ = 278166672. Its totient is φ = 77268240.

The previous prime is 156744377. The next prime is 156744451. The reversal of 156744428 is 824447651.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275675 + ... + 276242.

It is an arithmetic number, because the mean of its divisors is an integer number (23180556).

Almost surely, 2^156744428 is an apocalyptic number.

It is an amenable number.

156744428 is a deficient number, since it is larger than the sum of its proper divisors (121422244).

156744428 is a wasteful number, since it uses less digits than its factorization.

156744428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551992 (or 551990 counting only the distinct ones).

The product of its digits is 215040, while the sum is 41.

The square root of 156744428 is about 12519.7614993258. The cubic root of 156744428 is about 539.1761878365.

It can be divided in two parts, 15674 and 4428, that added together give a palindrome (20102).

The spelling of 156744428 in words is "one hundred fifty-six million, seven hundred forty-four thousand, four hundred twenty-eight".