28992337 has 8 divisors (see below), whose sum is σ = 31936320. Its totient is φ = 26099760.

The previous prime is 28992329. The next prime is 28992367. The reversal of 28992337 is 73329982.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28992337 - 2³ = 28992329 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28992293 and 28992302.

It is not an unprimeable number, because it can be changed into a prime (28992367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11662 + ... + 13927.

It is an arithmetic number, because the mean of its divisors is an integer number (3992040).

Almost surely, 2^28992337 is an apocalyptic number.

It is an amenable number.

28992337 is a deficient number, since it is larger than the sum of its proper divisors (2943983).

28992337 is a wasteful number, since it uses less digits than its factorization.

28992337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25703.

The product of its digits is 163296, while the sum is 43.

The square root of 28992337 is about 5384.4532684387. The cubic root of 28992337 is about 307.2046190768.

The spelling of 28992337 in words is "twenty-eight million, nine hundred ninety-two thousand, three hundred thirty-seven".