20255319 has 16 divisors (see below), whose sum is σ = 34295040. Its totient is φ = 11574360.

The previous prime is 20255303. The next prime is 20255321. The reversal of 20255319 is 91355202.

It is not a de Polignac number, because 20255319 - 2⁴ = 20255303 is a prime.

It is a super-2 number, since 2×20255319² = 820555895583522, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

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

It is a junction number, because it is equal to n+sod(n) for n = 20255292 and 20255301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20255329) 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, 53397 + ... + 53774.

It is an arithmetic number, because the mean of its divisors is an integer number (2143440).

Almost surely, 2^20255319 is an apocalyptic number.

20255319 is a deficient number, since it is larger than the sum of its proper divisors (14039721).

20255319 is a wasteful number, since it uses less digits than its factorization.

20255319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107187 (or 107181 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 20255319 is about 4500.5909611961. The cubic root of 20255319 is about 272.5919516861.

The spelling of 20255319 in words is "twenty million, two hundred fifty-five thousand, three hundred nineteen".