28695390 has 16 divisors (see below), whose sum is σ = 68869008. Its totient is φ = 7652096.

The previous prime is 28695389. The next prime is 28695391. The reversal of 28695390 is 9359682.

It is an interprime number because it is at equal distance from previous prime (28695389) and next prime (28695391).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28695391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 478227 + ... + 478286.

It is an arithmetic number, because the mean of its divisors is an integer number (4304313).

Almost surely, 2^28695390 is an apocalyptic number.

28695390 is an abundant number, since it is smaller than the sum of its proper divisors (40173618).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28695390 is a wasteful number, since it uses less digits than its factorization.

28695390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 956523.

The product of its (nonzero) digits is 116640, while the sum is 42.

The square root of 28695390 is about 5356.8078180947. The cubic root of 28695390 is about 306.1521947848.

The spelling of 28695390 in words is "twenty-eight million, six hundred ninety-five thousand, three hundred ninety".