28974014649 has 24 divisors (see below), whose sum is σ = 43220034312. Its totient is φ = 18690082560.

The previous prime is 28974014627. The next prime is 28974014669. The reversal of 28974014649 is 94641047982.

It can be written as a sum of positive squares in 4 ways, for example, as 9529664400 + 19444350249 = 97620^2 + 139443^2 .

It is not a de Polignac number, because 28974014649 - 2⁸ = 28974014393 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28974014595 and 28974014604.

It is not an unprimeable number, because it can be changed into a prime (28974014669) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 180084 + ... + 300629.

It is an arithmetic number, because the mean of its divisors is an integer number (1800834763).

Almost surely, 2^28974014649 is an apocalyptic number.

It is an amenable number.

28974014649 is a deficient number, since it is larger than the sum of its proper divisors (14246019663).

28974014649 is a wasteful number, since it uses less digits than its factorization.

28974014649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480937 (or 480934 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 54.

The spelling of 28974014649 in words is "twenty-eight billion, nine hundred seventy-four million, fourteen thousand, six hundred forty-nine".