20410293440 has 28 divisors (see below), whose sum is σ = 48602012016. Its totient is φ = 8164117248.

The previous prime is 20410293439. The next prime is 20410293457. The reversal of 20410293440 is 4439201402.

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, 31890764 + ... + 31891403.

Almost surely, 2^20410293440 is an apocalyptic number.

20410293440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20410293440 is an abundant number, since it is smaller than the sum of its proper divisors (28191718576).

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

20410293440 is an equidigital number, since it uses as much as digits as its factorization.

20410293440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63782184 (or 63782174 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 20410293440 its reverse (4439201402), we get a palindrome (24849494842).

The spelling of 20410293440 in words is "twenty billion, four hundred ten million, two hundred ninety-three thousand, four hundred forty".