424697728 has 192 divisors, whose sum is σ = 1109898720. Its totient is φ = 157593600.

The previous prime is 424697711. The next prime is 424697761. The reversal of 424697728 is 827796424.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4204878 + ... + 4204978.

Almost surely, 2^424697728 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 424697728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (554949360).

424697728 is an abundant number, since it is smaller than the sum of its proper divisors (685200992).

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

424697728 is a wasteful number, since it uses less digits than its factorization.

424697728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173 (or 142 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 49.

The square root of 424697728 is about 20608.1956512452. The cubic root of 424697728 is about 751.6690108191.

The spelling of 424697728 in words is "four hundred twenty-four million, six hundred ninety-seven thousand, seven hundred twenty-eight".