28307848 has 24 divisors (see below), whose sum is σ = 55493550. Its totient is φ = 13536512.

The previous prime is 28307837. The next prime is 28307879. The reversal of 28307848 is 84870382.

It can be written as a sum of positive squares in only one way, i.e., 19909444 + 8398404 = 4462^2 + 2898^2 .

It is a super-2 number, since 2×28307848² = 1602668516782208, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28307848.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 888 + ... + 7576.

Almost surely, 2^28307848 is an apocalyptic number.

It is an amenable number.

28307848 is a deficient number, since it is larger than the sum of its proper divisors (27185702).

28307848 is a wasteful number, since it uses less digits than its factorization.

28307848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6741 (or 6714 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 40.

The square root of 28307848 is about 5320.5120054371. The cubic root of 28307848 is about 304.7677099000.

The spelling of 28307848 in words is "twenty-eight million, three hundred seven thousand, eight hundred forty-eight".