428485380 has 48 divisors (see below), whose sum is σ = 1202679744. Its totient is φ = 113984640.

The previous prime is 428485373. The next prime is 428485403. The reversal of 428485380 is 83584824.

It is a happy number.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16779 + ... + 33741.

It is an arithmetic number, because the mean of its divisors is an integer number (25055828).

Almost surely, 2^428485380 is an apocalyptic number.

It is an amenable number.

428485380 is an abundant number, since it is smaller than the sum of its proper divisors (774194364).

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

428485380 is a wasteful number, since it uses less digits than its factorization.

428485380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17396 (or 17394 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 42.

The square root of 428485380 is about 20699.8884054963. Note that the first 3 decimals coincide. The cubic root of 428485380 is about 753.8969785626.

The spelling of 428485380 in words is "four hundred twenty-eight million, four hundred eighty-five thousand, three hundred eighty".