20916002 has 8 divisors (see below), whose sum is σ = 31428012. Its totient is φ = 10440000.

The previous prime is 20915981. The next prime is 20916019. The reversal of 20916002 is 20061902.

It can be written as a sum of positive squares in 2 ways, for example, as 19811401 + 1104601 = 4451^2 + 1051^2 .

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

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, 7499 + ... + 9902.

Almost surely, 2^20916002 is an apocalyptic number.

20916002 is a deficient number, since it is larger than the sum of its proper divisors (10512010).

20916002 is a wasteful number, since it uses less digits than its factorization.

20916002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18004.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 20916002 is about 4573.4015786939. The cubic root of 20916002 is about 275.5240782949.

Adding to 20916002 its reverse (20061902), we get a palindrome (40977904).

The spelling of 20916002 in words is "twenty million, nine hundred sixteen thousand, two".