402875775 has 144 divisors (see below), whose sum is σ = 818947584. Its totient is φ = 195540480.

The previous prime is 402875771. The next prime is 402875789. The reversal of 402875775 is 577578204.

It is not a de Polignac number, because 402875775 - 2² = 402875771 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 402875775.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402875771) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 4853884 + ... + 4853966.

It is an arithmetic number, because the mean of its divisors is an integer number (5687136).

Almost surely, 2^402875775 is an apocalyptic number.

402875775 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

402875775 is an abundant number, since it is smaller than the sum of its proper divisors (416071809).

402875775 is a wasteful number, since it uses less digits than its factorization.

402875775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172 (or 155 counting only the distinct ones).

The product of its (nonzero) digits is 548800, while the sum is 45.

The square root of 402875775 is about 20071.7656174040. The cubic root of 402875775 is about 738.5678259347.

The spelling of 402875775 in words is "four hundred two million, eight hundred seventy-five thousand, seven hundred seventy-five".