28947373 has 8 divisors (see below), whose sum is σ = 35627648. Its totient is φ = 22903344.

The previous prime is 28947371. The next prime is 28947383. The reversal of 28947373 is 37374982.

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 28947373 - 2¹ = 28947371 is a prime.

It is a super-2 number, since 2×28947373² = 1675900807202258, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28947371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158961 + ... + 159142.

It is an arithmetic number, because the mean of its divisors is an integer number (4453456).

Almost surely, 2^28947373 is an apocalyptic number.

It is an amenable number.

28947373 is a deficient number, since it is larger than the sum of its proper divisors (6680275).

28947373 is a wasteful number, since it uses less digits than its factorization.

28947373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318123.

The product of its digits is 254016, while the sum is 43.

The square root of 28947373 is about 5380.2762940206. The cubic root of 28947373 is about 307.0457231180.

The spelling of 28947373 in words is "twenty-eight million, nine hundred forty-seven thousand, three hundred seventy-three".