28582143461 has 8 divisors (see below), whose sum is σ = 28619762040. Its totient is φ = 28544548032.

The previous prime is 28582143451. The next prime is 28582143467. The reversal of 28582143461 is 16434128582.

It can be written as a sum of positive squares in 4 ways, for example, as 2755725025 + 25826418436 = 52495^2 + 160706^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28582143461 - 2²² = 28577949157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28582143467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4470455 + ... + 4476843.

It is an arithmetic number, because the mean of its divisors is an integer number (3577470255).

Almost surely, 2^28582143461 is an apocalyptic number.

It is an amenable number.

28582143461 is a deficient number, since it is larger than the sum of its proper divisors (37618579).

28582143461 is a wasteful number, since it uses less digits than its factorization.

28582143461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11575.

The product of its digits is 368640, while the sum is 44.

The spelling of 28582143461 in words is "twenty-eight billion, five hundred eighty-two million, one hundred forty-three thousand, four hundred sixty-one".