1572947680 has 48 divisors (see below), whose sum is σ = 3911680080. Its totient is φ = 596063232.

The previous prime is 1572947653. The next prime is 1572947689. The reversal of 1572947680 is 867492751.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1572947689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 255669 + ... + 261748.

It is an arithmetic number, because the mean of its divisors is an integer number (81493335).

Almost surely, 2^1572947680 is an apocalyptic number.

1572947680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1572947680 is an abundant number, since it is smaller than the sum of its proper divisors (2338732400).

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

1572947680 is a wasteful number, since it uses less digits than its factorization.

1572947680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517451 (or 517443 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 49.

The square root of 1572947680 is about 39660.4044356585. The cubic root of 1572947680 is about 1162.9778030501.

The spelling of 1572947680 in words is "one billion, five hundred seventy-two million, nine hundred forty-seven thousand, six hundred eighty".