20248815 has 16 divisors (see below), whose sum is σ = 33516000. Its totient is φ = 10426752.

The previous prime is 20248777. The next prime is 20248831. The reversal of 20248815 is 51884202.

It is not a de Polignac number, because 20248815 - 2⁷ = 20248687 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22840 + ... + 23709.

It is an arithmetic number, because the mean of its divisors is an integer number (2094750).

Almost surely, 2^20248815 is an apocalyptic number.

20248815 is a deficient number, since it is larger than the sum of its proper divisors (13267185).

20248815 is a wasteful number, since it uses less digits than its factorization.

20248815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46586.

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 20248815 is about 4499.8683314070. The cubic root of 20248815 is about 272.5627720609.

The spelling of 20248815 in words is "twenty million, two hundred forty-eight thousand, eight hundred fifteen".