20886345 has 12 divisors (see below), whose sum is σ = 36203076. Its totient is φ = 11139360.

The previous prime is 20886329. The next prime is 20886361. The reversal of 20886345 is 54368802.

It is an interprime number because it is at equal distance from previous prime (20886329) and next prime (20886361).

It can be written as a sum of positive squares in 2 ways, for example, as 3069504 + 17816841 = 1752^2 + 4221^2 .

It is not a de Polignac number, because 20886345 - 2⁴ = 20886329 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 232026 + ... + 232115.

It is an arithmetic number, because the mean of its divisors is an integer number (3016923).

Almost surely, 2^20886345 is an apocalyptic number.

It is an amenable number.

20886345 is a deficient number, since it is larger than the sum of its proper divisors (15316731).

20886345 is a wasteful number, since it uses less digits than its factorization.

20886345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464152 (or 464149 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 20886345 is about 4570.1580935456. The cubic root of 20886345 is about 275.3937939533.

The spelling of 20886345 in words is "twenty million, eight hundred eighty-six thousand, three hundred forty-five".