28002002 has 8 divisors (see below), whose sum is σ = 48003456. Its totient is φ = 12000852.

The previous prime is 28001993. The next prime is 28002019. The reversal of 28002002 is 20020082.

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

It is a super-2 number, since 2×28002002² = 1568224232016008, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14), and also a Moran number because the ratio is a prime number: 2000143 = 28002002 / (2 + 8 + 0 + 0 + 2 + 0 + 0 + 2).

28002002 is a modest number, since divided by 2002 gives 28 as remainder.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1000058 + ... + 1000085.

It is an arithmetic number, because the mean of its divisors is an integer number (6000432).

Almost surely, 2^28002002 is an apocalyptic number.

28002002 is a deficient number, since it is larger than the sum of its proper divisors (20001454).

28002002 is a wasteful number, since it uses less digits than its factorization.

28002002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2000152.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 28002002 is about 5291.6917899666. The cubic root of 28002002 is about 303.6661342188. Note that the first 3 decimals are identical.

Adding to 28002002 its reverse (20020082), we get a palindrome (48022084).

The spelling of 28002002 in words is "twenty-eight million, two thousand, two".