28489715441 has 4 divisors (see below), whose sum is σ = 31079689584. Its totient is φ = 25899741300.

The previous prime is 28489715381. The next prime is 28489715459. The reversal of 28489715441 is 14451798482.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28489715441 - 2²⁶ = 28422606577 is a prime.

It is a super-3 number, since 3×28489715441³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28489715041) 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, 1294987055 + ... + 1294987076.

It is an arithmetic number, because the mean of its divisors is an integer number (7769922396).

Almost surely, 2^28489715441 is an apocalyptic number.

It is an amenable number.

28489715441 is a deficient number, since it is larger than the sum of its proper divisors (2589974143).

28489715441 is a wasteful number, since it uses less digits than its factorization.

28489715441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2589974142.

The product of its digits is 2580480, while the sum is 53.

The spelling of 28489715441 in words is "twenty-eight billion, four hundred eighty-nine million, seven hundred fifteen thousand, four hundred forty-one".