20465475 has 24 divisors (see below), whose sum is σ = 34110912. Its totient is φ = 10826400.

The previous prime is 20465449. The next prime is 20465491. The reversal of 20465475 is 57456402.

It is not a de Polignac number, because 20465475 - 2⁶ = 20465411 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8784 + ... + 10866.

It is an arithmetic number, because the mean of its divisors is an integer number (1421288).

Almost surely, 2^20465475 is an apocalyptic number.

20465475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20465475 is a deficient number, since it is larger than the sum of its proper divisors (13645437).

20465475 is a wasteful number, since it uses less digits than its factorization.

20465475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2227 (or 2222 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 33.

The square root of 20465475 is about 4523.8783140133. The cubic root of 20465475 is about 273.5314554403.

The spelling of 20465475 in words is "twenty million, four hundred sixty-five thousand, four hundred seventy-five".