20248040 has 16 divisors (see below), whose sum is σ = 45558180. Its totient is φ = 8099200.

The previous prime is 20248031. The next prime is 20248069. The reversal of 20248040 is 4084202.

It can be written as a sum of positive squares in 2 ways, for example, as 19518724 + 729316 = 4418^2 + 854^2 .

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

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, 253061 + ... + 253140.

Almost surely, 2^20248040 is an apocalyptic number.

20248040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20248040 is an abundant number, since it is smaller than the sum of its proper divisors (25310140).

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

20248040 is a wasteful number, since it uses less digits than its factorization.

20248040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506212 (or 506208 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 20248040 is about 4499.7822169523. The cubic root of 20248040 is about 272.5592946748.

The spelling of 20248040 in words is "twenty million, two hundred forty-eight thousand, forty".