712434440 has 64 divisors (see below), whose sum is σ = 1643673600. Its totient is φ = 277820928.

The previous prime is 712434421. The next prime is 712434451. The reversal of 712434440 is 44434217.

It is a super-2 number, since 2×712434440² = 1015125662596227200, which contains 22 as substring.

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, 298532 + ... + 300908.

It is an arithmetic number, because the mean of its divisors is an integer number (25682400).

Almost surely, 2^712434440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 712434440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (821836800).

712434440 is an abundant number, since it is smaller than the sum of its proper divisors (931239160).

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

712434440 is a wasteful number, since it uses less digits than its factorization.

712434440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2574 (or 2570 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 29.

The square root of 712434440 is about 26691.4675505113. The cubic root of 712434440 is about 893.1305986568.

Adding to 712434440 its reverse (44434217), we get a palindrome (756868657).

The spelling of 712434440 in words is "seven hundred twelve million, four hundred thirty-four thousand, four hundred forty".