712249920 has 84 divisors (see below), whose sum is σ = 2449852860. Its totient is φ = 189932544.

The previous prime is 712249913. The next prime is 712249931. The reversal of 712249920 is 29942217.

It can be written as a sum of positive squares in 2 ways, for example, as 257025024 + 455224896 = 16032^2 + 21336^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 120775 + ... + 126534.

It is an arithmetic number, because the mean of its divisors is an integer number (29164915).

Almost surely, 2^712249920 is an apocalyptic number.

It is an amenable number.

712249920 is an abundant number, since it is smaller than the sum of its proper divisors (1737602940).

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

712249920 is a wasteful number, since it uses less digits than its factorization.

712249920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247332 (or 247319 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 712249920 is about 26688.0107913647. The cubic root of 712249920 is about 893.0534852745.

The spelling of 712249920 in words is "seven hundred twelve million, two hundred forty-nine thousand, nine hundred twenty".