28232674440 has 64 divisors (see below), whose sum is σ = 84721852800. Its totient is φ = 7526595072.

The previous prime is 28232674411. The next prime is 28232674441. The reversal of 28232674440 is 4447623282.

It is a junction number, because it is equal to n+sod(n) for n = 28232674392 and 28232674401.

It is not an unprimeable number, because it can be changed into a prime (28232674441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 421069 + ... + 483491.

It is an arithmetic number, because the mean of its divisors is an integer number (1323778950).

Almost surely, 2^28232674440 is an apocalyptic number.

28232674440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28232674440 is an abundant number, since it is smaller than the sum of its proper divisors (56489178360).

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

28232674440 is a wasteful number, since it uses less digits than its factorization.

28232674440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66206 (or 66202 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 42.

The spelling of 28232674440 in words is "twenty-eight billion, two hundred thirty-two million, six hundred seventy-four thousand, four hundred forty".