28974208 has 32 divisors (see below), whose sum is σ = 59140620. Its totient is φ = 14131200.

The previous prime is 28974203. The next prime is 28974233. The reversal of 28974208 is 80247982.

28974208 = T₃₄₂ + T₃₄₃ + ... + T₅₉₇.

It can be written as a sum of positive squares in 2 ways, for example, as 24681024 + 4293184 = 4968^2 + 2072^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (28974203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2488 + ... + 8008.

Almost surely, 2^28974208 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 28974208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29570310).

28974208 is an abundant number, since it is smaller than the sum of its proper divisors (30166412).

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

28974208 is an equidigital number, since it uses as much as digits as its factorization.

28974208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5576 (or 5564 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 28974208 is about 5382.7695473613. The cubic root of 28974208 is about 307.1405737191.

The spelling of 28974208 in words is "twenty-eight million, nine hundred seventy-four thousand, two hundred eight".