20623160 has 16 divisors (see below), whose sum is σ = 46402200. Its totient is φ = 8249248.

The previous prime is 20623139. The next prime is 20623181. The reversal of 20623160 is 6132602.

It is an interprime number because it is at equal distance from previous prime (20623139) and next prime (20623181).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 257750 + ... + 257829.

Almost surely, 2^20623160 is an apocalyptic number.

20623160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20623160 is an abundant number, since it is smaller than the sum of its proper divisors (25779040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20623160 is a wasteful number, since it uses less digits than its factorization.

20623160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515590 (or 515586 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 20623160 is about 4541.2729492952. The cubic root of 20623160 is about 274.2321721920.

Adding to 20623160 its reverse (6132602), we get a palindrome (26755762).

The spelling of 20623160 in words is "twenty million, six hundred twenty-three thousand, one hundred sixty".