28422807440 has 40 divisors (see below), whose sum is σ = 66090825720. Its totient is φ = 11367781376.

The previous prime is 28422807437. The next prime is 28422807499. The reversal of 28422807440 is 4470822482.

It can be written as a sum of positive squares in 4 ways, for example, as 1551729664 + 26871077776 = 39392^2 + 163924^2 .

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

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, 928052 + ... + 958188.

It is an arithmetic number, because the mean of its divisors is an integer number (1652270643).

Almost surely, 2^28422807440 is an apocalyptic number.

28422807440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28422807440 is an abundant number, since it is smaller than the sum of its proper divisors (37668018280).

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

28422807440 is a wasteful number, since it uses less digits than its factorization.

28422807440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41939 (or 41933 counting only the distinct ones).

The product of its (nonzero) digits is 229376, while the sum is 41.

The spelling of 28422807440 in words is "twenty-eight billion, four hundred twenty-two million, eight hundred seven thousand, four hundred forty".