20746235 has 16 divisors (see below), whose sum is σ = 25510464. Its totient is φ = 16192512.

The previous prime is 20746217. The next prime is 20746241. The reversal of 20746235 is 53264702.

It is a cyclic number.

It is not a de Polignac number, because 20746235 - 2¹⁰ = 20745211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20746198 and 20746207.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40994 + ... + 41496.

It is an arithmetic number, because the mean of its divisors is an integer number (1594404).

Almost surely, 2^20746235 is an apocalyptic number.

20746235 is a deficient number, since it is larger than the sum of its proper divisors (4764229).

20746235 is a wasteful number, since it uses less digits than its factorization.

20746235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694.

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 20746235 is about 4554.8035083854. The cubic root of 20746235 is about 274.7766119750.

The spelling of 20746235 in words is "twenty million, seven hundred forty-six thousand, two hundred thirty-five".