20455119 has 16 divisors (see below), whose sum is σ = 31622400. Its totient is φ = 13043448.

The previous prime is 20455109. The next prime is 20455129. The reversal of 20455119 is 91155402.

It is an interprime number because it is at equal distance from previous prime (20455109) and next prime (20455129).

It is not a de Polignac number, because 20455119 - 2⁵ = 20455087 is a prime.

It is a super-2 number, since 2×20455119² = 836823786608322, which contains 22 as substring.

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 = 20455092 and 20455101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20455109) 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, 15849 + ... + 17090.

It is an arithmetic number, because the mean of its divisors is an integer number (1976400).

Almost surely, 2^20455119 is an apocalyptic number.

20455119 is a deficient number, since it is larger than the sum of its proper divisors (11167281).

20455119 is a wasteful number, since it uses less digits than its factorization.

20455119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32971 (or 32965 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 20455119 is about 4522.7335760577. The cubic root of 20455119 is about 273.4853099247.

The spelling of 20455119 in words is "twenty million, four hundred fifty-five thousand, one hundred nineteen".