20474475 has 48 divisors (see below), whose sum is σ = 39402240. Its totient is φ = 9187200.

The previous prime is 20474473. The next prime is 20474479. The reversal of 20474475 is 57447402.

It is not a de Polignac number, because 20474475 - 2¹ = 20474473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20474473) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 30645 + ... + 31305.

It is an arithmetic number, because the mean of its divisors is an integer number (820880).

Almost surely, 2^20474475 is an apocalyptic number.

20474475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20474475 is a deficient number, since it is larger than the sum of its proper divisors (18927765).

20474475 is a wasteful number, since it uses less digits than its factorization.

20474475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740 (or 735 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 33.

The square root of 20474475 is about 4524.8729263925. The cubic root of 20474475 is about 273.5715460860.

The spelling of 20474475 in words is "twenty million, four hundred seventy-four thousand, four hundred seventy-five".