20266545 has 32 divisors (see below), whose sum is σ = 35747712. Its totient is φ = 9741312.

The previous prime is 20266537. The next prime is 20266553. The reversal of 20266545 is 54566202.

It is an interprime number because it is at equal distance from previous prime (20266537) and next prime (20266553).

It is not a de Polignac number, because 20266545 - 2³ = 20266537 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7177 + ... + 9593.

It is an arithmetic number, because the mean of its divisors is an integer number (1117116).

Almost surely, 2^20266545 is an apocalyptic number.

It is an amenable number.

20266545 is a deficient number, since it is larger than the sum of its proper divisors (15481167).

20266545 is a wasteful number, since it uses less digits than its factorization.

20266545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2481.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 20266545 is about 4501.8379579900. The cubic root of 20266545 is about 272.6423014583.

The spelling of 20266545 in words is "twenty million, two hundred sixty-six thousand, five hundred forty-five".