1572057136 has 20 divisors (see below), whose sum is σ = 3280158112. Its totient is φ = 725564736.

The previous prime is 1572057127. The next prime is 1572057139. The reversal of 1572057136 is 6317502751.

It is a junction number, because it is equal to n+sod(n) for n = 1572057095 and 1572057104.

It is not an unprimeable number, because it can be changed into a prime (1572057139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3778776 + ... + 3779191.

Almost surely, 2^1572057136 is an apocalyptic number.

1572057136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1572057136 is an abundant number, since it is smaller than the sum of its proper divisors (1708100976).

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

1572057136 is a wasteful number, since it uses less digits than its factorization.

1572057136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7557988 (or 7557982 counting only the distinct ones).

The product of its (nonzero) digits is 44100, while the sum is 37.

The square root of 1572057136 is about 39649.1757291372. The cubic root of 1572057136 is about 1162.7582834746.

Adding to 1572057136 its reverse (6317502751), we get a palindrome (7889559887).

The spelling of 1572057136 in words is "one billion, five hundred seventy-two million, fifty-seven thousand, one hundred thirty-six".