28989076 has 6 divisors (see below), whose sum is σ = 50730890. Its totient is φ = 14494536.

The previous prime is 28989071. The next prime is 28989101. The reversal of 28989076 is 67098982.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 26010000 + 2979076 = 5100^2 + 1726^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28989071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3623631 + ... + 3623638.

Almost surely, 2^28989076 is an apocalyptic number.

It is an amenable number.

28989076 is a deficient number, since it is larger than the sum of its proper divisors (21741814).

28989076 is a wasteful number, since it uses less digits than its factorization.

28989076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7247273 (or 7247271 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 49.

The square root of 28989076 is about 5384.1504436633. The cubic root of 28989076 is about 307.1931007249.

The spelling of 28989076 in words is "twenty-eight million, nine hundred eighty-nine thousand, seventy-six".