28976949 has 12 divisors (see below), whose sum is σ = 42014700. Its totient is φ = 19244544.

The previous prime is 28976947. The next prime is 28976953. The reversal of 28976949 is 94967982.

It can be written as a sum of positive squares in 2 ways, for example, as 2196324 + 26780625 = 1482^2 + 5175^2 .

It is not a de Polignac number, because 28976949 - 2¹ = 28976947 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28976895 and 28976904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28976947) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3564 + ... + 8405.

It is an arithmetic number, because the mean of its divisors is an integer number (3501225).

Almost surely, 2^28976949 is an apocalyptic number.

It is an amenable number.

28976949 is a deficient number, since it is larger than the sum of its proper divisors (13037751).

28976949 is a wasteful number, since it uses less digits than its factorization.

28976949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12244 (or 12241 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 54.

The square root of 28976949 is about 5383.0241500480. The cubic root of 28976949 is about 307.1502587209.

The spelling of 28976949 in words is "twenty-eight million, nine hundred seventy-six thousand, nine hundred forty-nine".