28446869 has 8 divisors (see below), whose sum is σ = 31154112. Its totient is φ = 25759840.

The previous prime is 28446833. The next prime is 28446893. The reversal of 28446869 is 96864482.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28446869 is a prime.

It is a super-2 number, since 2×28446869² = 1618448711806322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28446569) 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, 2024 + ... + 7809.

It is an arithmetic number, because the mean of its divisors is an integer number (3894264).

Almost surely, 2^28446869 is an apocalyptic number.

It is an amenable number.

28446869 is a deficient number, since it is larger than the sum of its proper divisors (2707243).

28446869 is a wasteful number, since it uses less digits than its factorization.

28446869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10107.

The product of its digits is 663552, while the sum is 47.

The square root of 28446869 is about 5333.5606305732. The cubic root of 28446869 is about 305.2658042989.

The spelling of 28446869 in words is "twenty-eight million, four hundred forty-six thousand, eight hundred sixty-nine".