20492002 has 8 divisors (see below), whose sum is σ = 30757212. Its totient is φ = 10239600.

The previous prime is 20491997. The next prime is 20492027. The reversal of 20492002 is 20029402.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20241001 + 251001 = 4499^2 + 501^2 .

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, 4752 + ... + 7972.

Almost surely, 2^20492002 is an apocalyptic number.

20492002 is a deficient number, since it is larger than the sum of its proper divisors (10265210).

20492002 is a wasteful number, since it uses less digits than its factorization.

20492002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6404.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 20492002 is about 4526.8092515590. The cubic root of 20492002 is about 273.6495866858.

The spelling of 20492002 in words is "twenty million, four hundred ninety-two thousand, two".