28247310 has 96 divisors (see below), whose sum is σ = 90417600. Its totient is φ = 5958144.

The previous prime is 28247299. The next prime is 28247321. The reversal of 28247310 is 1374282.

It is an interprime number because it is at equal distance from previous prime (28247299) and next prime (28247321).

It is a super-2 number, since 2×28247310² = 1595821044472200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6466 + ... + 9914.

It is an arithmetic number, because the mean of its divisors is an integer number (941850).

Almost surely, 2^28247310 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28247310, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45208800).

28247310 is an abundant number, since it is smaller than the sum of its proper divisors (62170290).

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

28247310 is a wasteful number, since it uses less digits than its factorization.

28247310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3482 (or 3479 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 28247310 is about 5314.8198464294. The cubic root of 28247310 is about 304.5503002800.

The spelling of 28247310 in words is "twenty-eight million, two hundred forty-seven thousand, three hundred ten".