28649349322 has 24 divisors (see below), whose sum is σ = 47376211428. Its totient is φ = 12983752320.

The previous prime is 28649349299. The next prime is 28649349347. The reversal of 28649349322 is 22394394682.

It can be written as a sum of positive squares in 2 ways, for example, as 28136372121 + 512977201 = 167739^2 + 22649^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 28649349322.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94093 + ... + 257200.

Almost surely, 2^28649349322 is an apocalyptic number.

28649349322 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28649349322 is a deficient number, since it is larger than the sum of its proper divisors (18726862106).

28649349322 is a wasteful number, since it uses less digits than its factorization.

28649349322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351654 (or 351643 counting only the distinct ones).

The product of its digits is 4478976, while the sum is 52.

The spelling of 28649349322 in words is "twenty-eight billion, six hundred forty-nine million, three hundred forty-nine thousand, three hundred twenty-two".