428915952 has 40 divisors (see below), whose sum is σ = 1231148880. Its totient is φ = 142971840.

The previous prime is 428915923. The next prime is 428915987. The reversal of 428915952 is 259519824.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 428915898 and 428915907.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 495999 + ... + 496862.

It is an arithmetic number, because the mean of its divisors is an integer number (30778722).

Almost surely, 2^428915952 is an apocalyptic number.

It is an amenable number.

428915952 is an abundant number, since it is smaller than the sum of its proper divisors (802232928).

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

428915952 is a wasteful number, since it uses less digits than its factorization.

428915952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 992878 (or 992866 counting only the distinct ones).

The product of its digits is 259200, while the sum is 45.

The square root of 428915952 is about 20710.2861399837. The cubic root of 428915952 is about 754.1494167837.

The spelling of 428915952 in words is "four hundred twenty-eight million, nine hundred fifteen thousand, nine hundred fifty-two".