28437472 has 48 divisors (see below), whose sum is σ = 64834560. Its totient is φ = 12025728.

The previous prime is 28437443. The next prime is 28437523. The reversal of 28437472 is 27473482.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16893 + ... + 18499.

It is an arithmetic number, because the mean of its divisors is an integer number (1350720).

Almost surely, 2^28437472 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 28437472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32417280).

28437472 is an abundant number, since it is smaller than the sum of its proper divisors (36397088).

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

28437472 is a wasteful number, since it uses less digits than its factorization.

28437472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1703 (or 1695 counting only the distinct ones).

The product of its digits is 75264, while the sum is 37.

The square root of 28437472 is about 5332.6796266042. The cubic root of 28437472 is about 305.2321872579.

The spelling of 28437472 in words is "twenty-eight million, four hundred thirty-seven thousand, four hundred seventy-two".