712091540 has 24 divisors (see below), whose sum is σ = 1507172352. Its totient is φ = 282592800.

The previous prime is 712091537. The next prime is 712091561. The reversal of 712091540 is 45190217.

712091540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×712091540² = 1014148722679143200, which contains 22 as substring.

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, 137636 + ... + 142715.

It is an arithmetic number, because the mean of its divisors is an integer number (62798848).

Almost surely, 2^712091540 is an apocalyptic number.

It is an amenable number.

712091540 is an abundant number, since it is smaller than the sum of its proper divisors (795080812).

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

712091540 is a wasteful number, since it uses less digits than its factorization.

712091540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280487 (or 280485 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 712091540 is about 26685.0433763935. The cubic root of 712091540 is about 892.9872855263.

The spelling of 712091540 in words is "seven hundred twelve million, ninety-one thousand, five hundred forty".