28891246 has 8 divisors (see below), whose sum is σ = 43377624. Its totient is φ = 14432040.

The previous prime is 28891241. The next prime is 28891259. The reversal of 28891246 is 64219882.

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

It is a junction number, because it is equal to n+sod(n) for n = 28891199 and 28891208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28891241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3885 + ... + 8536.

It is an arithmetic number, because the mean of its divisors is an integer number (5422203).

Almost surely, 2^28891246 is an apocalyptic number.

28891246 is a deficient number, since it is larger than the sum of its proper divisors (14486378).

28891246 is a wasteful number, since it uses less digits than its factorization.

28891246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13586.

The product of its digits is 55296, while the sum is 40.

The square root of 28891246 is about 5375.0577671314. The cubic root of 28891246 is about 306.8471477522.

The spelling of 28891246 in words is "twenty-eight million, eight hundred ninety-one thousand, two hundred forty-six".