2012640402 has 8 divisors (see below), whose sum is σ = 4025280816. Its totient is φ = 670880132.

The previous prime is 2012640389. The next prime is 2012640449. The reversal of 2012640402 is 2040462102.

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

2012640402 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167720028 + ... + 167720039.

It is an arithmetic number, because the mean of its divisors is an integer number (503160102).

Almost surely, 2^2012640402 is an apocalyptic number.

2012640402 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.

2012640402 is a wasteful number, since it uses less digits than its factorization.

2012640402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335440072.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 2012640402 is about 44862.4609445358. The cubic root of 2012640402 is about 1262.5697955989.

The spelling of 2012640402 in words is "two billion, twelve million, six hundred forty thousand, four hundred two".