28501185 has 8 divisors (see below), whose sum is σ = 45601920. Its totient is φ = 15200624.

The previous prime is 28501181. The next prime is 28501237. The reversal of 28501185 is 58110582.

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 28501185 - 2² = 28501181 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28501181) 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, 950025 + ... + 950054.

It is an arithmetic number, because the mean of its divisors is an integer number (5700240).

Almost surely, 2^28501185 is an apocalyptic number.

It is an amenable number.

28501185 is a deficient number, since it is larger than the sum of its proper divisors (17100735).

28501185 is a wasteful number, since it uses less digits than its factorization.

28501185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1900087.

The product of its (nonzero) digits is 3200, while the sum is 30.

The square root of 28501185 is about 5338.6501102807. The cubic root of 28501185 is about 305.4599706651.

The spelling of 28501185 in words is "twenty-eight million, five hundred one thousand, one hundred eighty-five".