20405119 has 12 divisors (see below), whose sum is σ = 24008400. Its totient is φ = 17289888.

The previous prime is 20405113. The next prime is 20405123. The reversal of 20405119 is 91150402.

It is not a de Polignac number, because 20405119 - 2⁷ = 20404991 is a prime.

It is a super-2 number, since 2×20405119² = 832737762808322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20405119.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20405113) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2022 + ... + 6700.

It is an arithmetic number, because the mean of its divisors is an integer number (2000700).

Almost surely, 2^20405119 is an apocalyptic number.

20405119 is a deficient number, since it is larger than the sum of its proper divisors (3603281).

20405119 is an equidigital number, since it uses as much as digits as its factorization.

20405119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4782 (or 4775 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 20405119 is about 4517.2025635342. The cubic root of 20405119 is about 273.2622944808.

The spelling of 20405119 in words is "twenty million, four hundred five thousand, one hundred nineteen".