28694865 has 8 divisors (see below), whose sum is σ = 45911808. Its totient is φ = 15303920.

The previous prime is 28694849. The next prime is 28694899. The reversal of 28694865 is 56849682.

It is a happy number.

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

It is not a de Polignac number, because 28694865 - 2⁴ = 28694849 is a prime.

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, 956481 + ... + 956510.

It is an arithmetic number, because the mean of its divisors is an integer number (5738976).

Almost surely, 2^28694865 is an apocalyptic number.

It is an amenable number.

28694865 is a deficient number, since it is larger than the sum of its proper divisors (17216943).

28694865 is a wasteful number, since it uses less digits than its factorization.

28694865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1912999.

The product of its digits is 829440, while the sum is 48.

The square root of 28694865 is about 5356.7588148058. The cubic root of 28694865 is about 306.1503276918.

The spelling of 28694865 in words is "twenty-eight million, six hundred ninety-four thousand, eight hundred sixty-five".