28891795 has 8 divisors (see below), whose sum is σ = 36177696. Its totient is φ = 22108416.

The previous prime is 28891787. The next prime is 28891813. The reversal of 28891795 is 59719882.

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 28891795 - 2³ = 28891787 is a prime.

It is a Duffinian 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, 125502 + ... + 125731.

It is an arithmetic number, because the mean of its divisors is an integer number (4522212).

Almost surely, 2^28891795 is an apocalyptic number.

28891795 is a deficient number, since it is larger than the sum of its proper divisors (7285901).

28891795 is a wasteful number, since it uses less digits than its factorization.

28891795 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251261.

The product of its digits is 362880, while the sum is 49.

The square root of 28891795 is about 5375.1088361074. The cubic root of 28891795 is about 306.8490913400.

The spelling of 28891795 in words is "twenty-eight million, eight hundred ninety-one thousand, seven hundred ninety-five".