20163475 has 12 divisors (see below), whose sum is σ = 25085200. Its totient is φ = 16077600.

The previous prime is 20163469. The next prime is 20163491. The reversal of 20163475 is 57436102.

It is not a de Polignac number, because 20163475 - 2⁵ = 20163443 is a prime.

It is a super-3 number, since 3×20163475³ (a number of 23 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

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, 7570 + ... + 9880.

Almost surely, 2^20163475 is an apocalyptic number.

20163475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20163475 is a deficient number, since it is larger than the sum of its proper divisors (4921725).

20163475 is a wasteful number, since it uses less digits than its factorization.

20163475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2670 (or 2665 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 20163475 is about 4490.3758194610. The cubic root of 20163475 is about 272.1793214514.

Adding to 20163475 its reverse (57436102), we get a palindrome (77599577).

The spelling of 20163475 in words is "twenty million, one hundred sixty-three thousand, four hundred seventy-five".