20319475 has 24 divisors (see below), whose sum is σ = 28243728. Its totient is φ = 14371200.

The previous prime is 20319469. The next prime is 20319487. The reversal of 20319475 is 57491302.

It is not a de Polignac number, because 20319475 - 2¹⁷ = 20188403 is a prime.

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 23 ways as a sum of consecutive naturals, for example, 9177 + ... + 11173.

It is an arithmetic number, because the mean of its divisors is an integer number (1176822).

Almost surely, 2^20319475 is an apocalyptic number.

20319475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20319475 is a deficient number, since it is larger than the sum of its proper divisors (7924253).

20319475 is a wasteful number, since it uses less digits than its factorization.

20319475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2055 (or 2050 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 20319475 is about 4507.7128346868. The cubic root of 20319475 is about 272.8794478184.

The spelling of 20319475 in words is "twenty million, three hundred nineteen thousand, four hundred seventy-five".