20623485 has 16 divisors (see below), whose sum is σ = 33186240. Its totient is φ = 10936320.

The previous prime is 20623483. The next prime is 20623487. The reversal of 20623485 is 58432602.

It is an interprime number because it is at equal distance from previous prime (20623483) and next prime (20623487).

It is not a de Polignac number, because 20623485 - 2¹ = 20623483 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20623483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1156 + ... + 6525.

It is an arithmetic number, because the mean of its divisors is an integer number (2074140).

Almost surely, 2^20623485 is an apocalyptic number.

It is an amenable number.

20623485 is a deficient number, since it is larger than the sum of its proper divisors (12562755).

20623485 is a wasteful number, since it uses less digits than its factorization.

20623485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7868.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 20623485 is about 4541.3087320727. The cubic root of 20623485 is about 274.2336127243.

The spelling of 20623485 in words is "twenty million, six hundred twenty-three thousand, four hundred eighty-five".