28484867 has 8 divisors (see below), whose sum is σ = 29194752. Its totient is φ = 27779400.

The previous prime is 28484851. The next prime is 28484881. The reversal of 28484867 is 76848482.

It is a happy number.

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 28484867 - 2⁴ = 28484851 is a prime.

It is a super-2 number, since 2×28484867² = 1622775296015378, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28484837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14642 + ... + 16472.

It is an arithmetic number, because the mean of its divisors is an integer number (3649344).

Almost surely, 2^28484867 is an apocalyptic number.

28484867 is a deficient number, since it is larger than the sum of its proper divisors (709885).

28484867 is a wasteful number, since it uses less digits than its factorization.

28484867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2209.

The product of its digits is 688128, while the sum is 47.

The square root of 28484867 is about 5337.1216025120. The cubic root of 28484867 is about 305.4016637635.

The spelling of 28484867 in words is "twenty-eight million, four hundred eighty-four thousand, eight hundred sixty-seven".