20460575 has 12 divisors (see below), whose sum is σ = 25531848. Its totient is φ = 16264800.

The previous prime is 20460569. The next prime is 20460577. The reversal of 20460575 is 57506402.

It is not a de Polignac number, because 20460575 - 2¹² = 20456479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20460577) 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, 1565 + ... + 6585.

It is an arithmetic number, because the mean of its divisors is an integer number (2127654).

Almost surely, 2^20460575 is an apocalyptic number.

20460575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20460575 is a deficient number, since it is larger than the sum of its proper divisors (5071273).

20460575 is a wasteful number, since it uses less digits than its factorization.

20460575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5194 (or 5189 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 20460575 is about 4523.3367108806. The cubic root of 20460575 is about 273.5096233692.

Adding to 20460575 its reverse (57506402), we get a palindrome (77966977).

The spelling of 20460575 in words is "twenty million, four hundred sixty thousand, five hundred seventy-five".