723872424 has 32 divisors (see below), whose sum is σ = 1974198240. Its totient is φ = 219355200.

The previous prime is 723872423. The next prime is 723872437. The reversal of 723872424 is 424278327.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (723872423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1370707 + ... + 1371234.

It is an arithmetic number, because the mean of its divisors is an integer number (61693695).

Almost surely, 2^723872424 is an apocalyptic number.

It is an amenable number.

723872424 is an abundant number, since it is smaller than the sum of its proper divisors (1250325816).

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

723872424 is a wasteful number, since it uses less digits than its factorization.

723872424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2741961 (or 2741957 counting only the distinct ones).

The product of its digits is 150528, while the sum is 39.

The square root of 723872424 is about 26904.8773273546. The cubic root of 723872424 is about 897.8849196861.

The spelling of 723872424 in words is "seven hundred twenty-three million, eight hundred seventy-two thousand, four hundred twenty-four".