28802943 has 24 divisors (see below), whose sum is σ = 45095232. Its totient is φ = 17610048.

The previous prime is 28802941. The next prime is 28802959. The reversal of 28802943 is 34920882.

It is not a de Polignac number, because 28802943 - 2¹ = 28802941 is a prime.

It is a super-2 number, since 2×28802943² = 1659219050922498, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28802898 and 28802907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28802941) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19530 + ... + 20952.

It is an arithmetic number, because the mean of its divisors is an integer number (1878968).

Almost surely, 2^28802943 is an apocalyptic number.

28802943 is a deficient number, since it is larger than the sum of its proper divisors (16292289).

28802943 is a wasteful number, since it uses less digits than its factorization.

28802943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1615 (or 1612 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 28802943 is about 5366.8373368307. The cubic root of 28802943 is about 306.5342135678.

The spelling of 28802943 in words is "twenty-eight million, eight hundred two thousand, nine hundred forty-three".