28871733 has 16 divisors (see below), whose sum is σ = 43444800. Its totient is φ = 16894080.

The previous prime is 28871683. The next prime is 28871737. The reversal of 28871733 is 33717882.

It is not a de Polignac number, because 28871733 - 2⁶ = 28871669 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28871691 and 28871700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28871737) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14128 + ... + 16041.

It is an arithmetic number, because the mean of its divisors is an integer number (2715300).

Almost surely, 2^28871733 is an apocalyptic number.

It is an amenable number.

28871733 is a deficient number, since it is larger than the sum of its proper divisors (14573067).

28871733 is a wasteful number, since it uses less digits than its factorization.

28871733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30212.

The product of its digits is 56448, while the sum is 39.

The square root of 28871733 is about 5373.2423172606. The cubic root of 28871733 is about 306.7780511952.

The spelling of 28871733 in words is "twenty-eight million, eight hundred seventy-one thousand, seven hundred thirty-three".