28995577 has 16 divisors (see below), whose sum is σ = 33264000. Its totient is φ = 25052544.

The previous prime is 28995559. The next prime is 28995583. The reversal of 28995577 is 77559982.

It is a cyclic number.

It is not a de Polignac number, because 28995577 - 2¹¹ = 28993529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28995587) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21324 + ... + 22642.

It is an arithmetic number, because the mean of its divisors is an integer number (2079000).

Almost surely, 2^28995577 is an apocalyptic number.

It is an amenable number.

28995577 is a deficient number, since it is larger than the sum of its proper divisors (4268423).

28995577 is a wasteful number, since it uses less digits than its factorization.

28995577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1440.

The product of its digits is 1587600, while the sum is 52.

The square root of 28995577 is about 5384.7541262345. The cubic root of 28995577 is about 307.2160623982.

The spelling of 28995577 in words is "twenty-eight million, nine hundred ninety-five thousand, five hundred seventy-seven".