428566965 has 8 divisors (see below), whose sum is σ = 685707168. Its totient is φ = 228569040.

The previous prime is 428566949. The next prime is 428566979. The reversal of 428566965 is 569665824.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 428566965 - 2⁴ = 428566949 is a prime.

It is a super-2 number, since 2×428566965² = 367339286978622450, which contains 22 as substring.

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, 14285551 + ... + 14285580.

It is an arithmetic number, because the mean of its divisors is an integer number (85713396).

Almost surely, 2^428566965 is an apocalyptic number.

It is an amenable number.

428566965 is a deficient number, since it is larger than the sum of its proper divisors (257140203).

428566965 is a wasteful number, since it uses less digits than its factorization.

428566965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28571139.

The product of its digits is 3110400, while the sum is 51.

The square root of 428566965 is about 20701.8589744979. The cubic root of 428566965 is about 753.9448236659.

The spelling of 428566965 in words is "four hundred twenty-eight million, five hundred sixty-six thousand, nine hundred sixty-five".