20533419 has 20 divisors (see below), whose sum is σ = 31258656. Its totient is φ = 13427856.

The previous prime is 20533391. The next prime is 20533427. The reversal of 20533419 is 91433502.

It is not a de Polignac number, because 20533419 - 2⁷ = 20533291 is a prime.

It is a super-2 number, since 2×20533419² = 843242591659122, 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 = 20533392 and 20533401.

It is not an unprimeable number, because it can be changed into a prime (20533459) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1902 + ... + 6684.

Almost surely, 2^20533419 is an apocalyptic number.

20533419 is a deficient number, since it is larger than the sum of its proper divisors (10725237).

20533419 is an equidigital number, since it uses as much as digits as its factorization.

20533419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4848 (or 4839 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 20533419 is about 4531.3815774000. The cubic root of 20533419 is about 273.8338230826.

The spelling of 20533419 in words is "twenty million, five hundred thirty-three thousand, four hundred nineteen".