20098287 has 48 divisors (see below), whose sum is σ = 33616128. Its totient is φ = 11897280.

The previous prime is 20098277. The next prime is 20098307. The reversal of 20098287 is 78289002.

It is not a de Polignac number, because 20098287 - 2⁸ = 20098031 is a prime.

It is a super-2 number, since 2×20098287² = 807882280668738, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20098237) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 195078 + ... + 195180.

It is an arithmetic number, because the mean of its divisors is an integer number (700336).

Almost surely, 2^20098287 is an apocalyptic number.

20098287 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

20098287 is a deficient number, since it is larger than the sum of its proper divisors (13517841).

20098287 is a wasteful number, since it uses less digits than its factorization.

20098287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202 (or 190 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 20098287 is about 4483.1113080092. Note that the first 3 decimals coincide. The cubic root of 20098287 is about 271.8856885215.

It can be divided in two parts, 2009 and 8287, that added together give a triangular number (10296 = T₁₄₃).

The spelling of 20098287 in words is "twenty million, ninety-eight thousand, two hundred eighty-seven".