28249068904 has 32 divisors (see below), whose sum is σ = 60573441600. Its totient is φ = 12098799360.

The previous prime is 28249068817. The next prime is 28249068907. The reversal of 28249068904 is 40986094282.

It is a super-2 number, since 2×28249068904² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28249068907) by changing a digit.

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, 79009 + ... + 250480.

It is an arithmetic number, because the mean of its divisors is an integer number (1892920050).

Almost surely, 2^28249068904 is an apocalyptic number.

It is an amenable number.

28249068904 is an abundant number, since it is smaller than the sum of its proper divisors (32324372696).

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

28249068904 is a wasteful number, since it uses less digits than its factorization.

28249068904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331033 (or 331029 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 52.

The spelling of 28249068904 in words is "twenty-eight billion, two hundred forty-nine million, sixty-eight thousand, nine hundred four".