424304640 has 168 divisors, whose sum is σ = 1472110848. Its totient is φ = 113049600.

The previous prime is 424304633. The next prime is 424304651. The reversal of 424304640 is 46403424.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 368065 + ... + 369215.

Almost surely, 2^424304640 is an apocalyptic number.

424304640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 424304640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (736055424).

424304640 is an abundant number, since it is smaller than the sum of its proper divisors (1047806208).

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

424304640 is a wasteful number, since it uses less digits than its factorization.

424304640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1188 (or 1161 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

The square root of 424304640 is about 20598.6562668539. The cubic root of 424304640 is about 751.4370314954.

The spelling of 424304640 in words is "four hundred twenty-four million, three hundred four thousand, six hundred forty".