28849657 has 8 divisors (see below), whose sum is σ = 30506400. Its totient is φ = 27206784.

The previous prime is 28849591. The next prime is 28849669. The reversal of 28849657 is 75694882.

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

It is not a de Polignac number, because 28849657 - 2¹⁵ = 28816889 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28849657.

It is not an unprimeable number, because it can be changed into a prime (28849757) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 969 + ... + 7657.

It is an arithmetic number, because the mean of its divisors is an integer number (3813300).

Almost surely, 2^28849657 is an apocalyptic number.

It is an amenable number.

28849657 is a deficient number, since it is larger than the sum of its proper divisors (1656743).

28849657 is a wasteful number, since it uses less digits than its factorization.

28849657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6935.

The product of its digits is 967680, while the sum is 49.

The square root of 28849657 is about 5371.1876712697. The cubic root of 28849657 is about 306.6998413754.

The spelling of 28849657 in words is "twenty-eight million, eight hundred forty-nine thousand, six hundred fifty-seven".