28969416 has 96 divisors (see below), whose sum is σ = 90417600. Its totient is φ = 8208000.

The previous prime is 28969403. The next prime is 28969427. The reversal of 28969416 is 61496982.

It is a happy number.

It is a super-3 number, since 3×28969416³ (a number of 23 digits) contains 333 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 115291 + ... + 115541.

It is an arithmetic number, because the mean of its divisors is an integer number (941850).

Almost surely, 2^28969416 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28969416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45208800).

28969416 is an abundant number, since it is smaller than the sum of its proper divisors (61448184).

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

28969416 is a wasteful number, since it uses less digits than its factorization.

28969416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499 (or 492 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 28969416 is about 5382.3244049388. The cubic root of 28969416 is about 307.1236402822.

The spelling of 28969416 in words is "twenty-eight million, nine hundred sixty-nine thousand, four hundred sixteen".