28313087 has 8 divisors (see below), whose sum is σ = 30965760. Its totient is φ = 25673560.

The previous prime is 28313081. The next prime is 28313099. The reversal of 28313087 is 78031382.

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

It is not a de Polignac number, because 28313087 - 2¹² = 28308991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28313081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1538 + ... + 7680.

It is an arithmetic number, because the mean of its divisors is an integer number (3870720).

Almost surely, 2^28313087 is an apocalyptic number.

28313087 is a deficient number, since it is larger than the sum of its proper divisors (2652673).

28313087 is a wasteful number, since it uses less digits than its factorization.

28313087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6573.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 28313087 is about 5321.0043224940. The cubic root of 28313087 is about 304.7865100991.

The spelling of 28313087 in words is "twenty-eight million, three hundred thirteen thousand, eighty-seven".