20494323 has 16 divisors (see below), whose sum is σ = 30449440. Its totient is φ = 13623552.

The previous prime is 20494321. The next prime is 20494343. The reversal of 20494323 is 32349402.

It is a happy number.

It is not a de Polignac number, because 20494323 - 2¹ = 20494321 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20494321) 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, 10815 + ... + 12567.

It is an arithmetic number, because the mean of its divisors is an integer number (1903090).

Almost surely, 2^20494323 is an apocalyptic number.

20494323 is a deficient number, since it is larger than the sum of its proper divisors (9955117).

20494323 is a wasteful number, since it uses less digits than its factorization.

20494323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2195 (or 2189 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 20494323 is about 4527.0656058864. The cubic root of 20494323 is about 273.6599178175.

The spelling of 20494323 in words is "twenty million, four hundred ninety-four thousand, three hundred twenty-three".