1172571020 has 48 divisors (see below), whose sum is σ = 2504506368. Its totient is φ = 461039040.

The previous prime is 1172571019. The next prime is 1172571031. The reversal of 1172571020 is 201752711.

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, 1182725 + ... + 1183715.

It is an arithmetic number, because the mean of its divisors is an integer number (52177216).

Almost surely, 2^1172571020 is an apocalyptic number.

1172571020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1172571020 is an abundant number, since it is smaller than the sum of its proper divisors (1331935348).

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

1172571020 is a wasteful number, since it uses less digits than its factorization.

1172571020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1950 (or 1948 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 26.

The square root of 1172571020 is about 34242.8243578125. The cubic root of 1172571020 is about 1054.4995177851.

The spelling of 1172571020 in words is "one billion, one hundred seventy-two million, five hundred seventy-one thousand, twenty".