28292002 has 4 divisors (see below), whose sum is σ = 42438006. Its totient is φ = 14146000.

The previous prime is 28291999. The next prime is 28292003. The reversal of 28292002 is 20029282.

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., 24910081 + 3381921 = 4991^2 + 1839^2 .

It is not an unprimeable number, because it can be changed into a prime (28292003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7072999 + ... + 7073002.

Almost surely, 2^28292002 is an apocalyptic number.

28292002 is a deficient number, since it is larger than the sum of its proper divisors (14146004).

28292002 is a wasteful number, since it uses less digits than its factorization.

28292002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14146003.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 28292002 is about 5319.0226545861. The cubic root of 28292002 is about 304.7108322628.

The spelling of 28292002 in words is "twenty-eight million, two hundred ninety-two thousand, two".