20248623 has 40 divisors (see below), whose sum is σ = 32524800. Its totient is φ = 12515472.

The previous prime is 20248607. The next prime is 20248637. The reversal of 20248623 is 32684202.

It is not a de Polignac number, because 20248623 - 2⁴ = 20248607 is a prime.

It is a super-2 number, since 2×20248623² = 820013466792258, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20248223) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 90690 + ... + 90912.

It is an arithmetic number, because the mean of its divisors is an integer number (813120).

Almost surely, 2^20248623 is an apocalyptic number.

20248623 is a deficient number, since it is larger than the sum of its proper divisors (12276177).

20248623 is a wasteful number, since it uses less digits than its factorization.

20248623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313 (or 304 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 20248623 is about 4499.8469973989. The cubic root of 20248623 is about 272.5619105748.

The spelling of 20248623 in words is "twenty million, two hundred forty-eight thousand, six hundred twenty-three".