428664652 has 24 divisors (see below), whose sum is σ = 833931392. Its totient is φ = 191462400.

The previous prime is 428664641. The next prime is 428664659. The reversal of 428664652 is 256466824.

It is a super-2 number, since 2×428664652² = 367506767748562208, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 428664599 and 428664608.

It is not an unprimeable number, because it can be changed into a prime (428664659) 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, 131349 + ... + 134572.

Almost surely, 2^428664652 is an apocalyptic number.

It is an amenable number.

428664652 is a deficient number, since it is larger than the sum of its proper divisors (405266740).

428664652 is a wasteful number, since it uses less digits than its factorization.

428664652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265969 (or 265967 counting only the distinct ones).

The product of its digits is 552960, while the sum is 43.

The square root of 428664652 is about 20704.2182175517. The cubic root of 428664652 is about 754.0021037168.

The spelling of 428664652 in words is "four hundred twenty-eight million, six hundred sixty-four thousand, six hundred fifty-two".