28481208465 has 8 divisors (see below), whose sum is σ = 45569933568. Its totient is φ = 15189977840.

The previous prime is 28481208443. The next prime is 28481208577. The reversal of 28481208465 is 56480218482.

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

It is not a de Polignac number, because 28481208465 - 2⁵ = 28481208433 is a prime.

It is a super-2 number, since 2×28481208465² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 949373601 + ... + 949373630.

It is an arithmetic number, because the mean of its divisors is an integer number (5696241696).

Almost surely, 2^28481208465 is an apocalyptic number.

It is an amenable number.

28481208465 is a deficient number, since it is larger than the sum of its proper divisors (17088725103).

28481208465 is a wasteful number, since it uses less digits than its factorization.

28481208465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1898747239.

The product of its (nonzero) digits is 983040, while the sum is 48.

The spelling of 28481208465 in words is "twenty-eight billion, four hundred eighty-one million, two hundred eight thousand, four hundred sixty-five".