28457601 has 16 divisors (see below), whose sum is σ = 39788160. Its totient is φ = 18057600.

The previous prime is 28457563. The next prime is 28457603. The reversal of 28457601 is 10675482.

It is not a de Polignac number, because 28457601 - 2⁹ = 28457089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28457603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14901 + ... + 16701.

It is an arithmetic number, because the mean of its divisors is an integer number (2486760).

Almost surely, 2^28457601 is an apocalyptic number.

It is an amenable number.

28457601 is a deficient number, since it is larger than the sum of its proper divisors (11330559).

28457601 is a wasteful number, since it uses less digits than its factorization.

28457601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2056.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 28457601 is about 5334.5666178238. The cubic root of 28457601 is about 305.3041881448.

The spelling of 28457601 in words is "twenty-eight million, four hundred fifty-seven thousand, six hundred one".