20046746 has 8 divisors (see below), whose sum is σ = 30090324. Its totient is φ = 10016640.

The previous prime is 20046737. The next prime is 20046781. The reversal of 20046746 is 64764002.

It can be written as a sum of positive squares in 2 ways, for example, as 18395521 + 1651225 = 4289^2 + 1285^2 .

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, 2186 + ... + 6698.

Almost surely, 2^20046746 is an apocalyptic number.

20046746 is a deficient number, since it is larger than the sum of its proper divisors (10043578).

20046746 is a wasteful number, since it uses less digits than its factorization.

20046746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6736.

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 20046746 is about 4477.3592663533. The cubic root of 20046746 is about 271.6530773853.

The spelling of 20046746 in words is "twenty million, forty-six thousand, seven hundred forty-six".