28890461459 has 4 divisors (see below), whose sum is σ = 28898505816. Its totient is φ = 28882417104.

The previous prime is 28890461449. The next prime is 28890461477. The reversal of 28890461459 is 95416409882.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95416409882 = 2 ⋅47708204941.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28890461459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28890461449) 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, 4016789 + ... + 4023974.

It is an arithmetic number, because the mean of its divisors is an integer number (7224626454).

Almost surely, 2^28890461459 is an apocalyptic number.

28890461459 is a deficient number, since it is larger than the sum of its proper divisors (8044357).

28890461459 is an equidigital number, since it uses as much as digits as its factorization.

28890461459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8044356.

The product of its (nonzero) digits is 4976640, while the sum is 56.

The spelling of 28890461459 in words is "twenty-eight billion, eight hundred ninety million, four hundred sixty-one thousand, four hundred fifty-nine".