428509648974 has 32 divisors (see below), whose sum is σ = 936522953856. Its totient is φ = 129630185120.

The previous prime is 428509648967. The next prime is 428509649003. The reversal of 428509648974 is 479846905824.

It is a Harshad number since it is a multiple of its sum of digits (66).

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, 5491557 + ... + 5569040.

It is an arithmetic number, because the mean of its divisors is an integer number (29266342308).

Almost surely, 2^428509648974 is an apocalyptic number.

428509648974 is an abundant number, since it is smaller than the sum of its proper divisors (508013304882).

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

428509648974 is a wasteful number, since it uses less digits than its factorization.

428509648974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11061200.

The product of its (nonzero) digits is 139345920, while the sum is 66.

The spelling of 428509648974 in words is "four hundred twenty-eight billion, five hundred nine million, six hundred forty-eight thousand, nine hundred seventy-four".