28056901 has 8 divisors (see below), whose sum is σ = 29648000. Its totient is φ = 26477280.

The previous prime is 28056869. The next prime is 28056907. The reversal of 28056901 is 10965082.

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 28056901 - 2⁵ = 28056869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28056907) 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, 2425 + ... + 7873.

It is an arithmetic number, because the mean of its divisors is an integer number (3706000).

Almost surely, 2^28056901 is an apocalyptic number.

It is an amenable number.

28056901 is a deficient number, since it is larger than the sum of its proper divisors (1591099).

28056901 is a wasteful number, since it uses less digits than its factorization.

28056901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5739.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 28056901 is about 5296.8765324482. The cubic root of 28056901 is about 303.8644543754.

The spelling of 28056901 in words is "twenty-eight million, fifty-six thousand, nine hundred one".