721454412 has 48 divisors (see below), whose sum is σ = 1927154432. Its totient is φ = 205778880.

The previous prime is 721454411. The next prime is 721454423. The reversal of 721454412 is 214454127.

It is a self number, because there is not a number n which added to its sum of digits gives 721454412.

It is not an unprimeable number, because it can be changed into a prime (721454411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44487 + ... + 58497.

Almost surely, 2^721454412 is an apocalyptic number.

It is an amenable number.

721454412 is an abundant number, since it is smaller than the sum of its proper divisors (1205700020).

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

721454412 is a wasteful number, since it uses less digits than its factorization.

721454412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14638 (or 14636 counting only the distinct ones).

The product of its digits is 8960, while the sum is 30.

The square root of 721454412 is about 26859.9034249939. The cubic root of 721454412 is about 896.8840442248.

The spelling of 721454412 in words is "seven hundred twenty-one million, four hundred fifty-four thousand, four hundred twelve".