20746146 has 16 divisors (see below), whose sum is σ = 41563008. Its totient is φ = 6903600.

The previous prime is 20746127. The next prime is 20746147. The reversal of 20746146 is 64164702.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20746147) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1351 + ... + 6581.

It is an arithmetic number, because the mean of its divisors is an integer number (2597688).

Almost surely, 2^20746146 is an apocalyptic number.

20746146 is an abundant number, since it is smaller than the sum of its proper divisors (20816862).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20746146 is a wasteful number, since it uses less digits than its factorization.

20746146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5897.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 20746146 is about 4554.7937384694. The cubic root of 20746146 is about 274.7762190498.

The spelling of 20746146 in words is "twenty million, seven hundred forty-six thousand, one hundred forty-six".