28698384 has 160 divisors (see below), whose sum is σ = 90244224. Its totient is φ = 7741440.

The previous prime is 28698361. The next prime is 28698389. The reversal of 28698384 is 48389682.

It is a happy number.

It is a super-2 number, since 2×28698384² = 1647194488422912, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (28698389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 253912 + ... + 254024.

Almost surely, 2^28698384 is an apocalyptic number.

28698384 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28698384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45122112).

28698384 is an abundant number, since it is smaller than the sum of its proper divisors (61545840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28698384 is a wasteful number, since it uses less digits than its factorization.

28698384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185 (or 179 counting only the distinct ones).

The product of its digits is 663552, while the sum is 48.

The square root of 28698384 is about 5357.0872682830. The cubic root of 28698384 is about 306.1628421140.

The spelling of 28698384 in words is "twenty-eight million, six hundred ninety-eight thousand, three hundred eighty-four".