1172405712 has 40 divisors (see below), whose sum is σ = 3030971680. Its totient is φ = 390510720.

The previous prime is 1172405683. The next prime is 1172405737. The reversal of 1172405712 is 2175042711.

It is a self number, because there is not a number n which added to its sum of digits gives 1172405712.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61662 + ... + 78402.

It is an arithmetic number, because the mean of its divisors is an integer number (75774292).

Almost surely, 2^1172405712 is an apocalyptic number.

1172405712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1172405712 is an abundant number, since it is smaller than the sum of its proper divisors (1858565968).

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

1172405712 is a wasteful number, since it uses less digits than its factorization.

1172405712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18211 (or 18205 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 30.

The square root of 1172405712 is about 34240.4105115578. The cubic root of 1172405712 is about 1054.4499613274.

The spelling of 1172405712 in words is "one billion, one hundred seventy-two million, four hundred five thousand, seven hundred twelve".