712343820 has 144 divisors (see below), whose sum is σ = 2177360640. Its totient is φ = 173521152.

The previous prime is 712343803. The next prime is 712343831. The reversal of 712343820 is 28343217.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 958369 + ... + 959111.

It is an arithmetic number, because the mean of its divisors is an integer number (15120560).

Almost surely, 2^712343820 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 712343820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1088680320).

712343820 is an abundant number, since it is smaller than the sum of its proper divisors (1465016820).

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

712343820 is a wasteful number, since it uses less digits than its factorization.

712343820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832 (or 801 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 712343820 is about 26689.7699503012. The cubic root of 712343820 is about 893.0927290077.

The spelling of 712343820 in words is "seven hundred twelve million, three hundred forty-three thousand, eight hundred twenty".