20852419 has 4 divisors (see below), whose sum is σ = 23831344. Its totient is φ = 17873496.

The previous prime is 20852411. The next prime is 20852431. The reversal of 20852419 is 91425802.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20852419 - 2³ = 20852411 is a prime.

It is a super-2 number, since 2×20852419² = 869646756303122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20852411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1489452 + ... + 1489465.

It is an arithmetic number, because the mean of its divisors is an integer number (5957836).

Almost surely, 2^20852419 is an apocalyptic number.

20852419 is a deficient number, since it is larger than the sum of its proper divisors (2978925).

20852419 is an equidigital number, since it uses as much as digits as its factorization.

20852419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2978924.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 20852419 is about 4566.4448972915. Note that the first 3 decimals coincide. The cubic root of 20852419 is about 275.2446044056.

The spelling of 20852419 in words is "twenty million, eight hundred fifty-two thousand, four hundred nineteen".