28754657 has 8 divisors (see below), whose sum is σ = 30652800. Its totient is φ = 26895024.

The previous prime is 28754651. The next prime is 28754683. The reversal of 28754657 is 75645782.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28754657 - 2⁴ = 28754641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28754651) 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 in 7 ways as a sum of consecutive naturals, for example, 8078 + ... + 11079.

It is an arithmetic number, because the mean of its divisors is an integer number (3831600).

Almost surely, 2^28754657 is an apocalyptic number.

It is an amenable number.

28754657 is a deficient number, since it is larger than the sum of its proper divisors (1898143).

28754657 is a wasteful number, since it uses less digits than its factorization.

28754657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19255.

The product of its digits is 470400, while the sum is 44.

The square root of 28754657 is about 5362.3368972865. The cubic root of 28754657 is about 306.3628237918.

The spelling of 28754657 in words is "twenty-eight million, seven hundred fifty-four thousand, six hundred fifty-seven".