28994097 has 8 divisors (see below), whose sum is σ = 42173280. Its totient is φ = 17572160.

The previous prime is 28994087. The next prime is 28994107. The reversal of 28994097 is 79049982.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28994087) and next prime (28994107).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28994097 - 2⁴ = 28994081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28994047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 439272 + ... + 439337.

It is an arithmetic number, because the mean of its divisors is an integer number (5271660).

Almost surely, 2^28994097 is an apocalyptic number.

It is an amenable number.

28994097 is a deficient number, since it is larger than the sum of its proper divisors (13179183).

28994097 is a wasteful number, since it uses less digits than its factorization.

28994097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878623.

The product of its (nonzero) digits is 326592, while the sum is 48.

The square root of 28994097 is about 5384.6166994504. The cubic root of 28994097 is about 307.2108353078.

It can be divided in two parts, 2899 and 4097, that added together give a palindrome (6996).

The spelling of 28994097 in words is "twenty-eight million, nine hundred ninety-four thousand, ninety-seven".