28303495 has 16 divisors (see below), whose sum is σ = 37231488. Its totient is φ = 20484640.

The previous prime is 28303493. The next prime is 28303523. The reversal of 28303495 is 59430382.

It is a happy number.

It is not a de Polignac number, because 28303495 - 2¹ = 28303493 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28303495.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28303493) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11352 + ... + 13618.

It is an arithmetic number, because the mean of its divisors is an integer number (2326968).

Almost surely, 2^28303495 is an apocalyptic number.

28303495 is a deficient number, since it is larger than the sum of its proper divisors (8927993).

28303495 is a wasteful number, since it uses less digits than its factorization.

28303495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2510.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 28303495 is about 5320.1029125384. The cubic root of 28303495 is about 304.7520873554.

The spelling of 28303495 in words is "twenty-eight million, three hundred three thousand, four hundred ninety-five".