428165540 has 24 divisors (see below), whose sum is σ = 980888832. Its totient is φ = 155696480.

The previous prime is 428165531. The next prime is 428165567. The reversal of 428165540 is 45561824.

It is a self number, because there is not a number n which added to its sum of digits gives 428165540.

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, 972884 + ... + 973323.

It is an arithmetic number, because the mean of its divisors is an integer number (40870368).

Almost surely, 2^428165540 is an apocalyptic number.

It is an amenable number.

428165540 is an abundant number, since it is smaller than the sum of its proper divisors (552723292).

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

428165540 is a wasteful number, since it uses less digits than its factorization.

428165540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1946227 (or 1946225 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 35.

The square root of 428165540 is about 20692.1613177551. The cubic root of 428165540 is about 753.7093514451.

The spelling of 428165540 in words is "four hundred twenty-eight million, one hundred sixty-five thousand, five hundred forty".