20328402 has 8 divisors (see below), whose sum is σ = 40656816. Its totient is φ = 6776132.

The previous prime is 20328367. The next prime is 20328419. The reversal of 20328402 is 20482302.

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

20328402 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, 1694028 + ... + 1694039.

It is an arithmetic number, because the mean of its divisors is an integer number (5082102).

Almost surely, 2^20328402 is an apocalyptic number.

20328402 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.

20328402 is a wasteful number, since it uses less digits than its factorization.

20328402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3388072.

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

The square root of 20328402 is about 4508.7029176915. The cubic root of 20328402 is about 272.9194035453.

The spelling of 20328402 in words is "twenty million, three hundred twenty-eight thousand, four hundred two".