402765388 has 12 divisors (see below), whose sum is σ = 716786280. Its totient is φ = 197969312.

The previous prime is 402765373. The next prime is 402765403. The reversal of 402765388 is 883567204.

It is an interprime number because it is at equal distance from previous prime (402765373) and next prime (402765403).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 853081 + ... + 853552.

It is an arithmetic number, because the mean of its divisors is an integer number (59732190).

Almost surely, 2^402765388 is an apocalyptic number.

It is an amenable number.

402765388 is a deficient number, since it is larger than the sum of its proper divisors (314020892).

402765388 is a wasteful number, since it uses less digits than its factorization.

402765388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1706696 (or 1706694 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 43.

The square root of 402765388 is about 20069.0156211011. The cubic root of 402765388 is about 738.5003644995.

The spelling of 402765388 in words is "four hundred two million, seven hundred sixty-five thousand, three hundred eighty-eight".