20080749 has 12 divisors (see below), whose sum is σ = 28993056. Its totient is φ = 12357072.

The previous prime is 20080741. The next prime is 20080763. The reversal of 20080749 is 94708002.

It is not a de Polignac number, because 20080749 - 2³ = 20080741 is a prime.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20080741) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19297 + ... + 20310.

It is an arithmetic number, because the mean of its divisors is an integer number (2416088).

Almost surely, 2^20080749 is an apocalyptic number.

It is an amenable number.

20080749 is a deficient number, since it is larger than the sum of its proper divisors (8912307).

20080749 is a wasteful number, since it uses less digits than its factorization.

20080749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39636 (or 39623 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 20080749 is about 4481.1548734673. The cubic root of 20080749 is about 271.8065819647.

The spelling of 20080749 in words is "twenty million, eighty thousand, seven hundred forty-nine".