20466545 has 12 divisors (see below), whose sum is σ = 26996340. Its totient is φ = 14884320.

The previous prime is 20466497. The next prime is 20466577. The reversal of 20466545 is 54566402.

It can be written as a sum of positive squares in 2 ways, for example, as 11182336 + 9284209 = 3344^2 + 3047^2 .

It is not a de Polignac number, because 20466545 - 2¹⁰ = 20465521 is a prime.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

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, 16310 + ... + 17519.

It is an arithmetic number, because the mean of its divisors is an integer number (2249695).

Almost surely, 2^20466545 is an apocalyptic number.

It is an amenable number.

20466545 is a deficient number, since it is larger than the sum of its proper divisors (6529795).

20466545 is a wasteful number, since it uses less digits than its factorization.

20466545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33856 (or 33845 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 20466545 is about 4523.9965738272. The cubic root of 20466545 is about 273.5362223882.

The spelling of 20466545 in words is "twenty million, four hundred sixty-six thousand, five hundred forty-five".