428218392 has 64 divisors (see below), whose sum is σ = 1225198080. Its totient is φ = 122176512.

The previous prime is 428218339. The next prime is 428218477. The reversal of 428218392 is 293812824.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 428218392.

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, 163848 + ... + 166440.

It is an arithmetic number, because the mean of its divisors is an integer number (19143720).

Almost surely, 2^428218392 is an apocalyptic number.

428218392 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

428218392 is an abundant number, since it is smaller than the sum of its proper divisors (796979688).

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

428218392 is a wasteful number, since it uses less digits than its factorization.

428218392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3592 (or 3588 counting only the distinct ones).

The product of its digits is 55296, while the sum is 39.

The square root of 428218392 is about 20693.4383803176. The cubic root of 428218392 is about 753.7403623540.

The spelling of 428218392 in words is "four hundred twenty-eight million, two hundred eighteen thousand, three hundred ninety-two".