28296450 has 144 divisors (see below), whose sum is σ = 93702336. Its totient is φ = 5961600.

The previous prime is 28296439. The next prime is 28296461. The reversal of 28296450 is 5469282.

It is a happy number.

28296450 is a `hidden beast` number, since 2 + 8 + 2 + 9 + 645 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (28296439) and next prime (28296461).

It is a super-3 number, since 3×28296450³ (a number of 23 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 40605 + ... + 41295.

Almost surely, 2^28296450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28296450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46851168).

28296450 is an abundant number, since it is smaller than the sum of its proper divisors (65405886).

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

28296450 is a wasteful number, since it uses less digits than its factorization.

28296450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729 (or 721 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 28296450 is about 5319.4407600800. The cubic root of 28296450 is about 304.7268000589.

The spelling of 28296450 in words is "twenty-eight million, two hundred ninety-six thousand, four hundred fifty".