20046785 has 16 divisors (see below), whose sum is σ = 26955072. Its totient is φ = 14184000.

The previous prime is 20046781. The next prime is 20046797. The reversal of 20046785 is 58764002.

It is not a de Polignac number, because 20046785 - 2² = 20046781 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20046781) 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, 2891 + ... + 6960.

It is an arithmetic number, because the mean of its divisors is an integer number (1684692).

Almost surely, 2^20046785 is an apocalyptic number.

It is an amenable number.

20046785 is a deficient number, since it is larger than the sum of its proper divisors (6908287).

20046785 is a wasteful number, since it uses less digits than its factorization.

20046785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9904.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 20046785 is about 4477.3636215970. The cubic root of 20046785 is about 271.6532535480.

The spelling of 20046785 in words is "twenty million, forty-six thousand, seven hundred eighty-five".