28750272 has 56 divisors (see below), whose sum is σ = 76693776. Its totient is φ = 9504768.

The previous prime is 28750261. The next prime is 28750277. The reversal of 28750272 is 27205782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28750277) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25758 + ... + 26850.

Almost surely, 2^28750272 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 28750272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38346888).

28750272 is an abundant number, since it is smaller than the sum of its proper divisors (47943504).

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

28750272 is a wasteful number, since it uses less digits than its factorization.

28750272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1245 (or 1235 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 33.

The square root of 28750272 is about 5361.9280114526. The cubic root of 28750272 is about 306.3472498591.

The spelling of 28750272 in words is "twenty-eight million, seven hundred fifty thousand, two hundred seventy-two".