20098783 has 4 divisors (see below), whose sum is σ = 20210008. Its totient is φ = 19987560.

The previous prime is 20098753. The next prime is 20098817. The reversal of 20098783 is 38789002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20098783 - 2¹⁷ = 19967711 is a prime.

It is a super-2 number, since 2×20098783² = 807922156162178, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20098753) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55341 + ... + 55702.

It is an arithmetic number, because the mean of its divisors is an integer number (5052502).

Almost surely, 2^20098783 is an apocalyptic number.

20098783 is a deficient number, since it is larger than the sum of its proper divisors (111225).

20098783 is a wasteful number, since it uses less digits than its factorization.

20098783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111224.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 20098783 is about 4483.1666263926. The cubic root of 20098783 is about 271.8879251001.

The spelling of 20098783 in words is "twenty million, ninety-eight thousand, seven hundred eighty-three".