28997934 has 16 divisors (see below), whose sum is σ = 66281088. Its totient is φ = 8285112.

The previous prime is 28997923. The next prime is 28997939. The reversal of 28997934 is 43979982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28997939) 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, 345172 + ... + 345255.

It is an arithmetic number, because the mean of its divisors is an integer number (4142568).

Almost surely, 2^28997934 is an apocalyptic number.

28997934 is an abundant number, since it is smaller than the sum of its proper divisors (37283154).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28997934 is a wasteful number, since it uses less digits than its factorization.

28997934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690439.

The product of its digits is 979776, while the sum is 51.

The square root of 28997934 is about 5384.9729804336. The cubic root of 28997934 is about 307.2243865257.

The spelling of 28997934 in words is "twenty-eight million, nine hundred ninety-seven thousand, nine hundred thirty-four".