28197002 has 4 divisors (see below), whose sum is σ = 42295506. Its totient is φ = 14098500.

The previous prime is 28196989. The next prime is 28197031. The reversal of 28197002 is 20079182.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 21169201 + 7027801 = 4601^2 + 2651^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7049249 + ... + 7049252.

Almost surely, 2^28197002 is an apocalyptic number.

28197002 is a deficient number, since it is larger than the sum of its proper divisors (14098504).

28197002 is a wasteful number, since it uses less digits than its factorization.

28197002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14098503.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 28197002 is about 5310.0849334074. The cubic root of 28197002 is about 304.3693931283.

The spelling of 28197002 in words is "twenty-eight million, one hundred ninety-seven thousand, two".