424672440 has 64 divisors (see below), whose sum is σ = 1282188960. Its totient is φ = 112519680.

The previous prime is 424672403. The next prime is 424672481. The reversal of 424672440 is 44276424.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7570 + ... + 30110.

Almost surely, 2^424672440 is an apocalyptic number.

424672440 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 424672440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (641094480).

424672440 is an abundant number, since it is smaller than the sum of its proper divisors (857516520).

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

424672440 is a wasteful number, since it uses less digits than its factorization.

424672440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22712 (or 22708 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 33.

The square root of 424672440 is about 20607.5820998001. The cubic root of 424672440 is about 751.6540915154.

The spelling of 424672440 in words is "four hundred twenty-four million, six hundred seventy-two thousand, four hundred forty".