723494020 has 12 divisors (see below), whose sum is σ = 1519337484. Its totient is φ = 289397600.

The previous prime is 723494011. The next prime is 723494033. The reversal of 723494020 is 20494327.

It can be written as a sum of positive squares in 2 ways, for example, as 355775044 + 367718976 = 18862^2 + 19176^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18087331 + ... + 18087370.

It is an arithmetic number, because the mean of its divisors is an integer number (126611457).

Almost surely, 2^723494020 is an apocalyptic number.

It is an amenable number.

723494020 is an abundant number, since it is smaller than the sum of its proper divisors (795843464).

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

723494020 is a wasteful number, since it uses less digits than its factorization.

723494020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36174710 (or 36174708 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 723494020 is about 26897.8441515301. The cubic root of 723494020 is about 897.7284360964.

The spelling of 723494020 in words is "seven hundred twenty-three million, four hundred ninety-four thousand, twenty".