20446293 has 16 divisors (see below), whose sum is σ = 31225856. Its totient is φ = 11657520.

The previous prime is 20446289. The next prime is 20446297. The reversal of 20446293 is 39264402.

It is an interprime number because it is at equal distance from previous prime (20446289) and next prime (20446297).

It is not a de Polignac number, because 20446293 - 2² = 20446289 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20446293.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20446297) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12480 + ... + 14022.

It is an arithmetic number, because the mean of its divisors is an integer number (1951616).

Almost surely, 2^20446293 is an apocalyptic number.

It is an amenable number.

20446293 is a deficient number, since it is larger than the sum of its proper divisors (10779563).

20446293 is a wasteful number, since it uses less digits than its factorization.

20446293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2184.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 20446293 is about 4521.7577334484. The cubic root of 20446293 is about 273.4459696729.

The spelling of 20446293 in words is "twenty million, four hundred forty-six thousand, two hundred ninety-three".