28351392332 has 6 divisors (see below), whose sum is σ = 49614936588. Its totient is φ = 14175696164.

The previous prime is 28351392323. The next prime is 28351392347. The reversal of 28351392332 is 23329315382.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 28351392332.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3543924038 + ... + 3543924045.

It is an arithmetic number, because the mean of its divisors is an integer number (8269156098).

Almost surely, 2^28351392332 is an apocalyptic number.

It is an amenable number.

28351392332 is a deficient number, since it is larger than the sum of its proper divisors (21263544256).

28351392332 is a wasteful number, since it uses less digits than its factorization.

28351392332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7087848087 (or 7087848085 counting only the distinct ones).

The product of its digits is 233280, while the sum is 41.

The spelling of 28351392332 in words is "twenty-eight billion, three hundred fifty-one million, three hundred ninety-two thousand, three hundred thirty-two".