28692464491 has 4 divisors (see below), whose sum is σ = 28988263192. Its totient is φ = 28396665792.

The previous prime is 28692464461. The next prime is 28692464497. The reversal of 28692464491 is 19446429682.

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

It is a cyclic number.

It is not a de Polignac number, because 28692464491 - 2¹⁵ = 28692431723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28692464497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147899205 + ... + 147899398.

It is an arithmetic number, because the mean of its divisors is an integer number (7247065798).

Almost surely, 2^28692464491 is an apocalyptic number.

28692464491 is a deficient number, since it is larger than the sum of its proper divisors (295798701).

28692464491 is an equidigital number, since it uses as much as digits as its factorization.

28692464491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295798700.

The product of its digits is 5971968, while the sum is 55.

The spelling of 28692464491 in words is "twenty-eight billion, six hundred ninety-two million, four hundred sixty-four thousand, four hundred ninety-one".