20854419 has 16 divisors (see below), whose sum is σ = 29366400. Its totient is φ = 13127616.

The previous prime is 20854411. The next prime is 20854429. The reversal of 20854419 is 91445802.

It is not a de Polignac number, because 20854419 - 2³ = 20854411 is a prime.

It is a super-2 number, since 2×20854419² = 869813583655122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20854419.

It is not an unprimeable number, because it can be changed into a prime (20854411) 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, 32112 + ... + 32754.

It is an arithmetic number, because the mean of its divisors is an integer number (1835400).

Almost surely, 2^20854419 is an apocalyptic number.

20854419 is a deficient number, since it is larger than the sum of its proper divisors (8511981).

20854419 is a wasteful number, since it uses less digits than its factorization.

20854419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1234.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 20854419 is about 4566.6638807777. The cubic root of 20854419 is about 275.2534038901.

The spelling of 20854419 in words is "twenty million, eight hundred fifty-four thousand, four hundred nineteen".