28982997 has 12 divisors (see below), whose sum is σ = 42654924. Its totient is φ = 18957120.

The previous prime is 28982963. The next prime is 28983001. The reversal of 28982997 is 79928982.

It can be written as a sum of positive squares in 2 ways, for example, as 24147396 + 4835601 = 4914^2 + 2199^2 .

It is not a de Polignac number, because 28982997 - 2⁸ = 28982741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28982197) 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, 29904 + ... + 30857.

It is an arithmetic number, because the mean of its divisors is an integer number (3554577).

Almost surely, 2^28982997 is an apocalyptic number.

It is an amenable number.

28982997 is a deficient number, since it is larger than the sum of its proper divisors (13671927).

28982997 is a wasteful number, since it uses less digits than its factorization.

28982997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60820 (or 60817 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 54.

The square root of 28982997 is about 5383.5858867487. The cubic root of 28982997 is about 307.1716264586.

The spelling of 28982997 in words is "twenty-eight million, nine hundred eighty-two thousand, nine hundred ninety-seven".