28965770 has 16 divisors (see below), whose sum is σ = 52207848. Its totient is φ = 11570880.

The previous prime is 28965767. The next prime is 28965791. The reversal of 28965770 is 7756982.

It can be written as a sum of positive squares in 4 ways, for example, as 16313521 + 12652249 = 4039^2 + 3557^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8792 + ... + 11628.

Almost surely, 2^28965770 is an apocalyptic number.

28965770 is a deficient number, since it is larger than the sum of its proper divisors (23242078).

28965770 is a wasteful number, since it uses less digits than its factorization.

28965770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3865.

The product of its (nonzero) digits is 211680, while the sum is 44.

The square root of 28965770 is about 5381.9856930319. The cubic root of 28965770 is about 307.1107552016.

The spelling of 28965770 in words is "twenty-eight million, nine hundred sixty-five thousand, seven hundred seventy".