428786975 has 12 divisors (see below), whose sum is σ = 536404656. Its totient is φ = 339991680.

The previous prime is 428786933. The next prime is 428786983. The reversal of 428786975 is 579687824.

It is not a de Polignac number, because 428786975 - 2¹⁴ = 428770591 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 428786975.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73067 + ... + 78716.

It is an arithmetic number, because the mean of its divisors is an integer number (44700388).

Almost surely, 2^428786975 is an apocalyptic number.

428786975 is a deficient number, since it is larger than the sum of its proper divisors (107617681).

428786975 is a wasteful number, since it uses less digits than its factorization.

428786975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151906 (or 151901 counting only the distinct ones).

The product of its digits is 6773760, while the sum is 56.

The square root of 428786975 is about 20707.1720667019. The cubic root of 428786975 is about 754.0738171391.

It can be divided in two parts, 4 and 28786975, that multiplied together give a triangular number (115147900 = T₁₅₁₇₅).

The spelling of 428786975 in words is "four hundred twenty-eight million, seven hundred eighty-six thousand, nine hundred seventy-five".