402403506 has 8 divisors (see below), whose sum is σ = 804807024. Its totient is φ = 134134500.

The previous prime is 402403439. The next prime is 402403517. The reversal of 402403506 is 605304204.

It is a sphenic number, since it is the product of 3 distinct primes.

402403506 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33533620 + ... + 33533631.

It is an arithmetic number, because the mean of its divisors is an integer number (100600878).

Almost surely, 2^402403506 is an apocalyptic number.

402403506 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

402403506 is a wasteful number, since it uses less digits than its factorization.

402403506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67067256.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 402403506 is about 20059.9976570288. The cubic root of 402403506 is about 738.2791190155.

The spelling of 402403506 in words is "four hundred two million, four hundred three thousand, five hundred six".