28997926 has 4 divisors (see below), whose sum is σ = 43496892. Its totient is φ = 14498962.

The previous prime is 28997923. The next prime is 28997939. The reversal of 28997926 is 62979982.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28997921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7249480 + ... + 7249483.

It is an arithmetic number, because the mean of its divisors is an integer number (10874223).

Almost surely, 2^28997926 is an apocalyptic number.

28997926 is a deficient number, since it is larger than the sum of its proper divisors (14498966).

28997926 is a wasteful number, since it uses less digits than its factorization.

28997926 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14498965.

The product of its digits is 979776, while the sum is 52.

The square root of 28997926 is about 5384.9722376257. The cubic root of 28997926 is about 307.2243582732.

The spelling of 28997926 in words is "twenty-eight million, nine hundred ninety-seven thousand, nine hundred twenty-six".