28469256490 has 16 divisors (see below), whose sum is σ = 51253236648. Its totient is φ = 11385797056.

The previous prime is 28469256479. The next prime is 28469256511. The reversal of 28469256490 is 9465296482.

It can be written as a sum of positive squares in 4 ways, for example, as 23790286081 + 4678970409 = 154241^2 + 68403^2 .

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, 174637 + ... + 295696.

Almost surely, 2^28469256490 is an apocalyptic number.

28469256490 is a deficient number, since it is larger than the sum of its proper divisors (22783980158).

28469256490 is a wasteful number, since it uses less digits than its factorization.

28469256490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476393.

The product of its (nonzero) digits is 7464960, while the sum is 55.

The spelling of 28469256490 in words is "twenty-eight billion, four hundred sixty-nine million, two hundred fifty-six thousand, four hundred ninety".