20494353 has 16 divisors (see below), whose sum is σ = 30301632. Its totient is φ = 12216000.

The previous prime is 20494351. The next prime is 20494361. The reversal of 20494353 is 35349402.

It is not a de Polignac number, because 20494353 - 2¹ = 20494351 is a prime.

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 20494353.

It is not an unprimeable number, because it can be changed into a prime (20494351) 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, 3078 + ... + 7103.

It is an arithmetic number, because the mean of its divisors is an integer number (1893852).

Almost surely, 2^20494353 is an apocalyptic number.

It is an amenable number.

20494353 is a deficient number, since it is larger than the sum of its proper divisors (9807279).

20494353 is a wasteful number, since it uses less digits than its factorization.

20494353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10256.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 20494353 is about 4527.0689192898. The cubic root of 20494353 is about 273.6600513470.

The spelling of 20494353 in words is "twenty million, four hundred ninety-four thousand, three hundred fifty-three".