20494673 has 16 divisors (see below), whose sum is σ = 23094720. Its totient is φ = 18072576.

The previous prime is 20494667. The next prime is 20494699. The reversal of 20494673 is 37649402.

It is a cyclic number.

It is not a de Polignac number, because 20494673 - 2²⁴ = 3717457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20494603) 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, 34265 + ... + 34857.

It is an arithmetic number, because the mean of its divisors is an integer number (1443420).

Almost surely, 2^20494673 is an apocalyptic number.

It is an amenable number.

20494673 is a deficient number, since it is larger than the sum of its proper divisors (2600047).

20494673 is a wasteful number, since it uses less digits than its factorization.

20494673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736.

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 20494673 is about 4527.1042621084. The cubic root of 20494673 is about 273.6614756542.

The spelling of 20494673 in words is "twenty million, four hundred ninety-four thousand, six hundred seventy-three".