20475495 has 12 divisors (see below), whose sum is σ = 35490936. Its totient is φ = 10920240.

The previous prime is 20475491. The next prime is 20475527. The reversal of 20475495 is 59457402.

It is not a de Polignac number, because 20475495 - 2² = 20475491 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20475491) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 227461 + ... + 227550.

It is an arithmetic number, because the mean of its divisors is an integer number (2957578).

Almost surely, 2^20475495 is an apocalyptic number.

20475495 is a deficient number, since it is larger than the sum of its proper divisors (15015441).

20475495 is a wasteful number, since it uses less digits than its factorization.

20475495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455022 (or 455019 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 20475495 is about 4524.9856353363. The cubic root of 20475495 is about 273.5760889512.

The spelling of 20475495 in words is "twenty million, four hundred seventy-five thousand, four hundred ninety-five".