428020464 has 40 divisors (see below), whose sum is σ = 1107367120. Its totient is φ = 142460928.

The previous prime is 428020427. The next prime is 428020471. The reversal of 428020464 is 464020824.

It is a congruent number.

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, 27744 + ... + 40320.

It is an arithmetic number, because the mean of its divisors is an integer number (27684178).

Almost surely, 2^428020464 is an apocalyptic number.

It is an amenable number.

428020464 is an abundant number, since it is smaller than the sum of its proper divisors (679346656).

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

428020464 is a wasteful number, since it uses less digits than its factorization.

428020464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13297 (or 13291 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 30.

The square root of 428020464 is about 20688.6554420533. The cubic root of 428020464 is about 753.6242149891.

The spelling of 428020464 in words is "four hundred twenty-eight million, twenty thousand, four hundred sixty-four".