20098692 has 120 divisors (see below), whose sum is σ = 57629880. Its totient is φ = 6082560.

The previous prime is 20098681. The next prime is 20098693. The reversal of 20098692 is 29689002.

It can be written as a sum of positive squares in 4 ways, for example, as 171396 + 19927296 = 414^2 + 4464^2 .

It is a super-2 number, since 2×20098692² = 807914840221728, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (20098693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 225784 + ... + 225872.

It is an arithmetic number, because the mean of its divisors is an integer number (480249).

Almost surely, 2^20098692 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20098692, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28814940).

20098692 is an abundant number, since it is smaller than the sum of its proper divisors (37531188).

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

20098692 is a wasteful number, since it uses less digits than its factorization.

20098692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163 (or 152 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 20098692 is about 4483.1564773048. The cubic root of 20098692 is about 271.8875147628.

It can be divided in two parts, 2009 and 8692, that added together give a palindrome (10701).

The spelling of 20098692 in words is "twenty million, ninety-eight thousand, six hundred ninety-two".