28931095 has 8 divisors (see below), whose sum is σ = 34750080. Its totient is φ = 23123040.

The previous prime is 28931087. The next prime is 28931099. The reversal of 28931095 is 59013982.

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

It is not a de Polignac number, because 28931095 - 2³ = 28931087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28931099) 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, 5185 + ... + 9205.

It is an arithmetic number, because the mean of its divisors is an integer number (4343760).

Almost surely, 2^28931095 is an apocalyptic number.

28931095 is a deficient number, since it is larger than the sum of its proper divisors (5818985).

28931095 is a wasteful number, since it uses less digits than its factorization.

28931095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5465.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 28931095 is about 5378.7633337041. The cubic root of 28931095 is about 306.9881585688.

The spelling of 28931095 in words is "twenty-eight million, nine hundred thirty-one thousand, ninety-five".