20340798 has 16 divisors (see below), whose sum is σ = 41289600. Its totient is φ = 6678936.

The previous prime is 20340751. The next prime is 20340799. The reversal of 20340798 is 89704302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20340799) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24898 + ... + 25701.

It is an arithmetic number, because the mean of its divisors is an integer number (2580600).

Almost surely, 2^20340798 is an apocalyptic number.

20340798 is an abundant number, since it is smaller than the sum of its proper divisors (20948802).

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

20340798 is a wasteful number, since it uses less digits than its factorization.

20340798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50671.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 20340798 is about 4510.0773829281. The cubic root of 20340798 is about 272.9748665292.

The spelling of 20340798 in words is "twenty million, three hundred forty thousand, seven hundred ninety-eight".