428912465 has 32 divisors (see below), whose sum is σ = 567336960. Its totient is φ = 309836800.

The previous prime is 428912447. The next prime is 428912483. The reversal of 428912465 is 564219824.

It is an interprime number because it is at equal distance from previous prime (428912447) and next prime (428912483).

It is not a de Polignac number, because 428912465 - 2¹² = 428908369 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 470360 + ... + 471270.

It is an arithmetic number, because the mean of its divisors is an integer number (17729280).

Almost surely, 2^428912465 is an apocalyptic number.

It is an amenable number.

428912465 is a deficient number, since it is larger than the sum of its proper divisors (138424495).

428912465 is a wasteful number, since it uses less digits than its factorization.

428912465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1153.

The product of its digits is 138240, while the sum is 41.

The square root of 428912465 is about 20710.2019545923. The cubic root of 428912465 is about 754.1473730841.

The spelling of 428912465 in words is "four hundred twenty-eight million, nine hundred twelve thousand, four hundred sixty-five".