424709628 has 48 divisors (see below), whose sum is σ = 1181806080. Its totient is φ = 116069184.

The previous prime is 424709627. The next prime is 424709639. The reversal of 424709628 is 826907424.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 424709628.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424709627) 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, 107983 + ... + 111846.

It is an arithmetic number, because the mean of its divisors is an integer number (24620960).

Almost surely, 2^424709628 is an apocalyptic number.

It is an amenable number.

424709628 is an abundant number, since it is smaller than the sum of its proper divisors (757096452).

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

424709628 is a wasteful number, since it uses less digits than its factorization.

424709628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219866 (or 219864 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 424709628 is about 20608.4843693077. The cubic root of 424709628 is about 751.6760313242.

The spelling of 424709628 in words is "four hundred twenty-four million, seven hundred nine thousand, six hundred twenty-eight".