28970272 has 48 divisors (see below), whose sum is σ = 59439744. Its totient is φ = 13888000.

The previous prime is 28970267. The next prime is 28970287. The reversal of 28970272 is 27207982.

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, 92997 + ... + 93307.

It is an arithmetic number, because the mean of its divisors is an integer number (1238328).

Almost surely, 2^28970272 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 28970272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29719872).

28970272 is an abundant number, since it is smaller than the sum of its proper divisors (30469472).

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

28970272 is a wasteful number, since it uses less digits than its factorization.

28970272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433 (or 425 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 28970272 is about 5382.4039238987. The cubic root of 28970272 is about 307.1266652568.

The spelling of 28970272 in words is "twenty-eight million, nine hundred seventy thousand, two hundred seventy-two".