20844402 has 8 divisors (see below), whose sum is σ = 41688816. Its totient is φ = 6948132.

The previous prime is 20844401. The next prime is 20844407. The reversal of 20844402 is 20444802.

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

20844402 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (20844401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1737028 + ... + 1737039.

It is an arithmetic number, because the mean of its divisors is an integer number (5211102).

Almost surely, 2^20844402 is an apocalyptic number.

20844402 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.

20844402 is a wasteful number, since it uses less digits than its factorization.

20844402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3474072.

The product of its (nonzero) digits is 2048, while the sum is 24.

The square root of 20844402 is about 4565.5669965515. The cubic root of 20844402 is about 275.2093260231.

The spelling of 20844402 in words is "twenty million, eight hundred forty-four thousand, four hundred two".