28744416 has 192 divisors, whose sum is σ = 94348800. Its totient is φ = 8460288.

The previous prime is 28744393. The next prime is 28744427. The reversal of 28744416 is 61444782.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

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, 279021 + ... + 279123.

It is an arithmetic number, because the mean of its divisors is an integer number (491400).

Almost surely, 2^28744416 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 28744416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47174400).

28744416 is an abundant number, since it is smaller than the sum of its proper divisors (65604384).

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

28744416 is a wasteful number, since it uses less digits than its factorization.

28744416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158 (or 144 counting only the distinct ones).

The product of its digits is 43008, while the sum is 36.

The square root of 28744416 is about 5361.3819114105. The cubic root of 28744416 is about 306.3264489972.

The spelling of 28744416 in words is "twenty-eight million, seven hundred forty-four thousand, four hundred sixteen".