28997324 has 6 divisors (see below), whose sum is σ = 50745324. Its totient is φ = 14498660.

The previous prime is 28997317. The next prime is 28997327. The reversal of 28997324 is 42379982.

It is not an unprimeable number, because it can be changed into a prime (28997327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3624662 + ... + 3624669.

It is an arithmetic number, because the mean of its divisors is an integer number (8457554).

Almost surely, 2^28997324 is an apocalyptic number.

It is an amenable number.

28997324 is a deficient number, since it is larger than the sum of its proper divisors (21748000).

28997324 is a wasteful number, since it uses less digits than its factorization.

28997324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7249335 (or 7249333 counting only the distinct ones).

The product of its digits is 217728, while the sum is 44.

The square root of 28997324 is about 5384.9163410400. The cubic root of 28997324 is about 307.2222322551. Note that the first 4 decimals are identical.

The spelling of 28997324 in words is "twenty-eight million, nine hundred ninety-seven thousand, three hundred twenty-four".