28468250978 has 4 divisors (see below), whose sum is σ = 42702376470. Its totient is φ = 14234125488.

The previous prime is 28468250969. The next prime is 28468250999. The reversal of 28468250978 is 87905286482.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 27556996009 + 911254969 = 166003^2 + 30187^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7117062743 + ... + 7117062746.

Almost surely, 2^28468250978 is an apocalyptic number.

28468250978 is a deficient number, since it is larger than the sum of its proper divisors (14234125492).

28468250978 is a wasteful number, since it uses less digits than its factorization.

28468250978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14234125491.

The product of its (nonzero) digits is 15482880, while the sum is 59.

The spelling of 28468250978 in words is "twenty-eight billion, four hundred sixty-eight million, two hundred fifty thousand, nine hundred seventy-eight".