28333951440 has 40 divisors (see below), whose sum is σ = 87835250208. Its totient is φ = 7555720320.

The previous prime is 28333951409. The next prime is 28333951453. The reversal of 28333951440 is 4415933382.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 28333951392 and 28333951401.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59028826 + ... + 59029305.

Almost surely, 2^28333951440 is an apocalyptic number.

28333951440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28333951440 is an abundant number, since it is smaller than the sum of its proper divisors (59501298768).

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

28333951440 is a wasteful number, since it uses less digits than its factorization.

28333951440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118058147 (or 118058141 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 42.

The spelling of 28333951440 in words is "twenty-eight billion, three hundred thirty-three million, nine hundred fifty-one thousand, four hundred forty".