28142097 has 8 divisors (see below), whose sum is σ = 39497760. Its totient is φ = 17773920.

The previous prime is 28142071. The next prime is 28142111. The reversal of 28142097 is 79024182.

It is a happy number.

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

It is not a de Polignac number, because 28142097 - 2⁶ = 28142033 is a prime.

It is a super-3 number, since 3×28142097³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (28142797) 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, 246804 + ... + 246917.

It is an arithmetic number, because the mean of its divisors is an integer number (4937220).

Almost surely, 2^28142097 is an apocalyptic number.

It is an amenable number.

28142097 is a deficient number, since it is larger than the sum of its proper divisors (11355663).

28142097 is a wasteful number, since it uses less digits than its factorization.

28142097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493743.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 28142097 is about 5304.9125346230. The cubic root of 28142097 is about 304.1717094637.

The spelling of 28142097 in words is "twenty-eight million, one hundred forty-two thousand, ninety-seven".