20494735 has 16 divisors (see below), whose sum is σ = 25583040. Its totient is φ = 15742720.

The previous prime is 20494723. The next prime is 20494739. The reversal of 20494735 is 53749402.

It is not a de Polignac number, because 20494735 - 2⁹ = 20494223 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20494735.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20494739) 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, 40494 + ... + 40996.

It is an arithmetic number, because the mean of its divisors is an integer number (1598940).

Almost surely, 2^20494735 is an apocalyptic number.

20494735 is a deficient number, since it is larger than the sum of its proper divisors (5088305).

20494735 is a wasteful number, since it uses less digits than its factorization.

20494735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 20494735 is about 4527.1111097476. Note that the first 4 decimals coincide. The cubic root of 20494735 is about 273.6617516120.

The spelling of 20494735 in words is "twenty million, four hundred ninety-four thousand, seven hundred thirty-five".