20098290 has 16 divisors (see below), whose sum is σ = 48235968. Its totient is φ = 5359536.

The previous prime is 20098277. The next prime is 20098307. The reversal of 20098290 is 9289002.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 669943 = 20098290 / (2 + 0 + 0 + 9 + 8 + 2 + 9 + 0).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 334942 + ... + 335001.

It is an arithmetic number, because the mean of its divisors is an integer number (3014748).

Almost surely, 2^20098290 is an apocalyptic number.

20098290 is an abundant number, since it is smaller than the sum of its proper divisors (28137678).

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

20098290 is a wasteful number, since it uses less digits than its factorization.

20098290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669953.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 20098290 is about 4483.1116425983. Note that the first 3 decimals coincide. The cubic root of 20098290 is about 271.8857020493.

The spelling of 20098290 in words is "twenty million, ninety-eight thousand, two hundred ninety".