28997548 has 6 divisors (see below), whose sum is σ = 50745716. Its totient is φ = 14498772.

The previous prime is 28997539. The next prime is 28997561. The reversal of 28997548 is 84579982.

It is a junction number, because it is equal to n+sod(n) for n = 28997495 and 28997504.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3624690 + ... + 3624697.

Almost surely, 2^28997548 is an apocalyptic number.

It is an amenable number.

28997548 is a deficient number, since it is larger than the sum of its proper divisors (21748168).

28997548 is a wasteful number, since it uses less digits than its factorization.

28997548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7249391 (or 7249389 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 52.

The square root of 28997548 is about 5384.9371398374. The cubic root of 28997548 is about 307.2230233350.

The spelling of 28997548 in words is "twenty-eight million, nine hundred ninety-seven thousand, five hundred forty-eight".