20240254240 has 24 divisors (see below), whose sum is σ = 47817601020. Its totient is φ = 8096101632.

The previous prime is 20240254207. The next prime is 20240254253. The reversal of 20240254240 is 4245204202.

It can be written as a sum of positive squares in 2 ways, for example, as 18573328656 + 1666925584 = 136284^2 + 40828^2 .

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, 63250635 + ... + 63250954.

Almost surely, 2^20240254240 is an apocalyptic number.

20240254240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20240254240 is an abundant number, since it is smaller than the sum of its proper divisors (27577346780).

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

20240254240 is a wasteful number, since it uses less digits than its factorization.

20240254240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126501604 (or 126501596 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 25.

Adding to 20240254240 its reverse (4245204202), we get a palindrome (24485458442).

The spelling of 20240254240 in words is "twenty billion, two hundred forty million, two hundred fifty-four thousand, two hundred forty".