228765465 has 40 divisors (see below), whose sum is σ = 413994240. Its totient is φ = 120845088.

The previous prime is 228765457. The next prime is 228765473. The reversal of 228765465 is 564567822.

228765465 is a `hidden beast` number, since 22 + 87 + 6 + 546 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (228765457) and next prime (228765473).

It is not a de Polignac number, because 228765465 - 2³ = 228765457 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 228765465.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 40696 + ... + 45974.

It is an arithmetic number, because the mean of its divisors is an integer number (10349856).

Almost surely, 2^228765465 is an apocalyptic number.

It is an amenable number.

228765465 is a deficient number, since it is larger than the sum of its proper divisors (185228775).

228765465 is a wasteful number, since it uses less digits than its factorization.

228765465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5403 (or 5394 counting only the distinct ones).

The product of its digits is 806400, while the sum is 45.

The square root of 228765465 is about 15124.9947107429. The cubic root of 228765465 is about 611.5943823223.

The spelling of 228765465 in words is "two hundred twenty-eight million, seven hundred sixty-five thousand, four hundred sixty-five".