428181960 has 64 divisors (see below), whose sum is σ = 1314434880. Its totient is φ = 111525120.

The previous prime is 428181953. The next prime is 428181979. The reversal of 428181960 is 69181824.

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, 36331 + ... + 46650.

It is an arithmetic number, because the mean of its divisors is an integer number (20538045).

Almost surely, 2^428181960 is an apocalyptic number.

428181960 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

428181960 is an abundant number, since it is smaller than the sum of its proper divisors (886252920).

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

428181960 is a wasteful number, since it uses less digits than its factorization.

428181960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83038 (or 83034 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 39.

The square root of 428181960 is about 20692.5580825571. The cubic root of 428181960 is about 753.7189861527.

The spelling of 428181960 in words is "four hundred twenty-eight million, one hundred eighty-one thousand, nine hundred sixty".