28355701 has 4 divisors (see below), whose sum is σ = 30933504. Its totient is φ = 25777900.

The previous prime is 28355687. The next prime is 28355759. The reversal of 28355701 is 10755382.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28355701 - 2¹³ = 28347509 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 (28355501) 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 3 ways as a sum of consecutive naturals, for example, 1288885 + ... + 1288906.

It is an arithmetic number, because the mean of its divisors is an integer number (7733376).

Almost surely, 2^28355701 is an apocalyptic number.

It is an amenable number.

28355701 is a deficient number, since it is larger than the sum of its proper divisors (2577803).

28355701 is a wasteful number, since it uses less digits than its factorization.

28355701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2577802.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 28355701 is about 5325.0071361455. The cubic root of 28355701 is about 304.9393447420.

The spelling of 28355701 in words is "twenty-eight million, three hundred fifty-five thousand, seven hundred one".