28997854 has 16 divisors (see below), whose sum is σ = 45191520. Its totient is φ = 13938400.

The previous prime is 28997833. The next prime is 28997861. The reversal of 28997854 is 45879982.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14304 + ... + 16204.

It is an arithmetic number, because the mean of its divisors is an integer number (2824470).

Almost surely, 2^28997854 is an apocalyptic number.

28997854 is a deficient number, since it is larger than the sum of its proper divisors (16193666).

28997854 is a wasteful number, since it uses less digits than its factorization.

28997854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2195.

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

The square root of 28997854 is about 5384.9655523504. The cubic root of 28997854 is about 307.2241040001.

The spelling of 28997854 in words is "twenty-eight million, nine hundred ninety-seven thousand, eight hundred fifty-four".