28034997 has 8 divisors (see below), whose sum is σ = 37444800. Its totient is φ = 18657600.

The previous prime is 28034977. The next prime is 28035001. The reversal of 28034997 is 79943082.

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

It is not a de Polignac number, because 28034997 - 2¹⁸ = 27772853 is a prime.

It is a super-2 number, since 2×28034997² = 1571922113580018, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28034927) 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, 6004 + ... + 9597.

It is an arithmetic number, because the mean of its divisors is an integer number (4680600).

Almost surely, 2^28034997 is an apocalyptic number.

It is an amenable number.

28034997 is a deficient number, since it is larger than the sum of its proper divisors (9409803).

28034997 is a wasteful number, since it uses less digits than its factorization.

28034997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16203.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 28034997 is about 5294.8084951205. The cubic root of 28034997 is about 303.7853582101.

The spelling of 28034997 in words is "twenty-eight million, thirty-four thousand, nine hundred ninety-seven".