28452691012 has 48 divisors (see below), whose sum is σ = 50810981760. Its totient is φ = 13938912000.

The previous prime is 28452690997. The next prime is 28452691021. The reversal of 28452691012 is 21019625482.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24297187 + ... + 24298357.

It is an arithmetic number, because the mean of its divisors is an integer number (1058562120).

Almost surely, 2^28452691012 is an apocalyptic number.

It is an amenable number.

28452691012 is a deficient number, since it is larger than the sum of its proper divisors (22358290748).

28452691012 is a wasteful number, since it uses less digits than its factorization.

28452691012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1852 (or 1850 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 40.

The spelling of 28452691012 in words is "twenty-eight billion, four hundred fifty-two million, six hundred ninety-one thousand, twelve".