428774540 has 24 divisors (see below), whose sum is σ = 913868592. Its totient is φ = 168949440.

The previous prime is 428774519. The next prime is 428774557. The reversal of 428774540 is 45477824.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158651 + ... + 161330.

It is an arithmetic number, because the mean of its divisors is an integer number (38077858).

Almost surely, 2^428774540 is an apocalyptic number.

It is an amenable number.

428774540 is an abundant number, since it is smaller than the sum of its proper divisors (485094052).

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

428774540 is a wasteful number, since it uses less digits than its factorization.

428774540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320057 (or 320055 counting only the distinct ones).

The product of its (nonzero) digits is 250880, while the sum is 41.

The square root of 428774540 is about 20706.8718062386. The cubic root of 428774540 is about 754.0665275843.

The spelling of 428774540 in words is "four hundred twenty-eight million, seven hundred seventy-four thousand, five hundred forty".