28501895 has 8 divisors (see below), whose sum is σ = 34331040. Its totient is φ = 22715680.

The previous prime is 28501873. The next prime is 28501909. The reversal of 28501895 is 59810582.

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

It is not a de Polignac number, because 28501895 - 2⁶ = 28501831 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9251 + ... + 11940.

It is an arithmetic number, because the mean of its divisors is an integer number (4291380).

Almost surely, 2^28501895 is an apocalyptic number.

28501895 is a deficient number, since it is larger than the sum of its proper divisors (5829145).

28501895 is a wasteful number, since it uses less digits than its factorization.

28501895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21465.

The product of its (nonzero) digits is 28800, while the sum is 38.

The square root of 28501895 is about 5338.7166060768. The cubic root of 28501895 is about 305.4625071068.

The spelling of 28501895 in words is "twenty-eight million, five hundred one thousand, eight hundred ninety-five".