20486223 has 16 divisors (see below), whose sum is σ = 30632800. Its totient is φ = 13530240.

The previous prime is 20486203. The next prime is 20486239. The reversal of 20486223 is 32268402.

It is not a de Polignac number, because 20486223 - 2⁸ = 20485967 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20486203) 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, 538 + ... + 6423.

It is an arithmetic number, because the mean of its divisors is an integer number (1914550).

Almost surely, 2^20486223 is an apocalyptic number.

20486223 is a deficient number, since it is larger than the sum of its proper divisors (10146577).

20486223 is a wasteful number, since it uses less digits than its factorization.

20486223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7079 (or 7073 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 20486223 is about 4526.1708982317. The cubic root of 20486223 is about 273.6238600690.

The spelling of 20486223 in words is "twenty million, four hundred eighty-six thousand, two hundred twenty-three".