428374872 has 64 divisors (see below), whose sum is σ = 1196613600. Its totient is φ = 141989760.

The previous prime is 428374867. The next prime is 428374907. The reversal of 428374872 is 278473824.

It is a super-2 number, since 2×428374872² = 367010061922032768, which contains 22 as substring.

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, 33618 + ... + 44574.

Almost surely, 2^428374872 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 428374872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (598306800).

428374872 is an abundant number, since it is smaller than the sum of its proper divisors (768238728).

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

428374872 is a wasteful number, since it uses less digits than its factorization.

428374872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11153 (or 11143 counting only the distinct ones).

The product of its digits is 602112, while the sum is 45.

The square root of 428374872 is about 20697.2189436166. The cubic root of 428374872 is about 753.8321620295.

The spelling of 428374872 in words is "four hundred twenty-eight million, three hundred seventy-four thousand, eight hundred seventy-two".