20892455 has 4 divisors (see below), whose sum is σ = 25070952. Its totient is φ = 16713960.

The previous prime is 20892433. The next prime is 20892463. The reversal of 20892455 is 55429802.

It is a happy number.

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

It is not a de Polignac number, because 20892455 - 2¹⁶ = 20826919 is a prime.

It is a Duffinian number.

It is a zygodrome in base 3.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2089241 + ... + 2089250.

It is an arithmetic number, because the mean of its divisors is an integer number (6267738).

Almost surely, 2^20892455 is an apocalyptic number.

20892455 is a deficient number, since it is larger than the sum of its proper divisors (4178497).

20892455 is an equidigital number, since it uses as much as digits as its factorization.

20892455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4178496.

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 20892455 is about 4570.8265116935. The cubic root of 20892455 is about 275.4206455004.

The spelling of 20892455 in words is "twenty million, eight hundred ninety-two thousand, four hundred fifty-five".