423247872 has 120 divisors (see below), whose sum is σ = 1153398400. Its totient is φ = 138018816.

The previous prime is 423247807. The next prime is 423247889. The reversal of 423247872 is 278742324.

It is a super-2 number, since 2×423247872² = 358277522305056768, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 423247872.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3882954 + ... + 3883062.

Almost surely, 2^423247872 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 423247872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (576699200).

423247872 is an abundant number, since it is smaller than the sum of its proper divisors (730150528).

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

423247872 is an equidigital number, since it uses as much as digits as its factorization.

423247872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219 (or 193 counting only the distinct ones).

The product of its digits is 150528, while the sum is 39.

The square root of 423247872 is about 20572.9888932065. The cubic root of 423247872 is about 750.8126728768.

The spelling of 423247872 in words is "four hundred twenty-three million, two hundred forty-seven thousand, eight hundred seventy-two".