28097910432 has 72 divisors (see below), whose sum is σ = 79925983956. Its totient is φ = 9363326976.

The previous prime is 28097910431. The next prime is 28097910443. The reversal of 28097910432 is 23401979082.

It can be written as a sum of positive squares in 2 ways, for example, as 23397985296 + 4699925136 = 152964^2 + 68556^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (28097910431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1191298 + ... + 1214654.

Almost surely, 2^28097910432 is an apocalyptic number.

It is an amenable number.

28097910432 is an abundant number, since it is smaller than the sum of its proper divisors (51828073524).

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

28097910432 is a wasteful number, since it uses less digits than its factorization.

28097910432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27550 (or 27539 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The spelling of 28097910432 in words is "twenty-eight billion, ninety-seven million, nine hundred ten thousand, four hundred thirty-two".