428957188 has 24 divisors (see below), whose sum is σ = 820318464. Its totient is φ = 194647200.

The previous prime is 428957173. The next prime is 428957189. The reversal of 428957188 is 881759824.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (428957189) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18678 + ... + 34738.

It is an arithmetic number, because the mean of its divisors is an integer number (34179936).

Almost surely, 2^428957188 is an apocalyptic number.

It is an amenable number.

428957188 is a deficient number, since it is larger than the sum of its proper divisors (391361276).

428957188 is a wasteful number, since it uses less digits than its factorization.

428957188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16683 (or 16681 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 52.

The square root of 428957188 is about 20711.2816600036. The cubic root of 428957188 is about 754.1735839962.

The spelling of 428957188 in words is "four hundred twenty-eight million, nine hundred fifty-seven thousand, one hundred eighty-eight".