20340804 has 24 divisors (see below), whose sum is σ = 51776928. Its totient is φ = 6163840.

The previous prime is 20340799. The next prime is 20340829. The reversal of 20340804 is 40804302.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76917 + ... + 77180.

It is an arithmetic number, because the mean of its divisors is an integer number (2157372).

Almost surely, 2^20340804 is an apocalyptic number.

It is an amenable number.

20340804 is an abundant number, since it is smaller than the sum of its proper divisors (31436124).

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

20340804 is a wasteful number, since it uses less digits than its factorization.

20340804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154115 (or 154113 counting only the distinct ones).

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

The square root of 20340804 is about 4510.0780481052. The cubic root of 20340804 is about 272.9748933693.

The spelling of 20340804 in words is "twenty million, three hundred forty thousand, eight hundred four".