20440698 has 32 divisors (see below), whose sum is σ = 45173376. Its totient is φ = 6133248.

The previous prime is 20440691. The next prime is 20440699. The reversal of 20440698 is 89604402.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20440691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2011 + ... + 6702.

It is an arithmetic number, because the mean of its divisors is an integer number (1411668).

Almost surely, 2^20440698 is an apocalyptic number.

20440698 is an abundant number, since it is smaller than the sum of its proper divisors (24732678).

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

20440698 is a wasteful number, since it uses less digits than its factorization.

20440698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8758.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 20440698 is about 4521.1390157791. The cubic root of 20440698 is about 273.4210251386.

The spelling of 20440698 in words is "twenty million, four hundred forty thousand, six hundred ninety-eight".