428198520 has 48 divisors (see below), whose sum is σ = 1285275960. Its totient is φ = 114125824.

The previous prime is 428198513. The next prime is 428198549. The reversal of 428198520 is 25891824.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 225736 + ... + 227624.

Almost surely, 2^428198520 is an apocalyptic number.

428198520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

428198520 is an abundant number, since it is smaller than the sum of its proper divisors (857077440).

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

428198520 is an equidigital number, since it uses as much as digits as its factorization.

428198520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3792 (or 1899 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 428198520 is about 20692.9582225452. The cubic root of 428198520 is about 753.7287027582.

The spelling of 428198520 in words is "four hundred twenty-eight million, one hundred ninety-eight thousand, five hundred twenty".