20623064 has 32 divisors (see below), whose sum is σ = 48211200. Its totient is φ = 8034720.

The previous prime is 20623061. The next prime is 20623067. The reversal of 20623064 is 46032602.

It is an interprime number because it is at equal distance from previous prime (20623061) and next prime (20623067).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20623061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16124 + ... + 17355.

It is an arithmetic number, because the mean of its divisors is an integer number (1506600).

Almost surely, 2^20623064 is an apocalyptic number.

It is an amenable number.

20623064 is an abundant number, since it is smaller than the sum of its proper divisors (27588136).

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

20623064 is a wasteful number, since it uses less digits than its factorization.

20623064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33503 (or 33499 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 20623064 is about 4541.2623795592. The cubic root of 20623064 is about 274.2317466780.

Adding to 20623064 its reverse (46032602), we get a palindrome (66655666).

The spelling of 20623064 in words is "twenty million, six hundred twenty-three thousand, sixty-four".