28683496440 has 112 divisors (see below), whose sum is σ = 96762634200. Its totient is φ = 7648924608.

The previous prime is 28683496423. The next prime is 28683496477. The reversal of 28683496440 is 4469438682.

28683496440 is a `hidden beast` number, since 2 + 86 + 8 + 34 + 96 + 440 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 462670 + ... + 520989.

Almost surely, 2^28683496440 is an apocalyptic number.

28683496440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28683496440 is an abundant number, since it is smaller than the sum of its proper divisors (68079137760).

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

28683496440 is an equidigital number, since it uses as much as digits as its factorization.

28683496440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983688 (or 983669 counting only the distinct ones).

The product of its (nonzero) digits is 7962624, while the sum is 54.

The spelling of 28683496440 in words is "twenty-eight billion, six hundred eighty-three million, four hundred ninety-six thousand, four hundred forty".