28224240440 has 64 divisors (see below), whose sum is σ = 70311749760. Its totient is φ = 10110165120.

The previous prime is 28224240413. The next prime is 28224240481. The reversal of 28224240440 is 4404242282.

It is a junction number, because it is equal to n+sod(n) for n = 28224240397 and 28224240406.

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, 449222 + ... + 508181.

It is an arithmetic number, because the mean of its divisors is an integer number (1098621090).

Almost surely, 2^28224240440 is an apocalyptic number.

28224240440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28224240440 is an abundant number, since it is smaller than the sum of its proper divisors (42087509320).

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

28224240440 is a wasteful number, since it uses less digits than its factorization.

28224240440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957492 (or 957488 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 32.

The spelling of 28224240440 in words is "twenty-eight billion, two hundred twenty-four million, two hundred forty thousand, four hundred forty".