20377206 has 12 divisors (see below), whose sum is σ = 44150652. Its totient is φ = 6792396.

The previous prime is 20377193. The next prime is 20377207. The reversal of 20377206 is 60277302.

It is a self number, because there is not a number n which added to its sum of digits gives 20377206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20377207) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 566016 + ... + 566051.

It is an arithmetic number, because the mean of its divisors is an integer number (3679221).

Almost surely, 2^20377206 is an apocalyptic number.

20377206 is an abundant number, since it is smaller than the sum of its proper divisors (23773446).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20377206 is a wasteful number, since it uses less digits than its factorization.

20377206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1132075 (or 1132072 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 20377206 is about 4514.1118727830. Note that the first 3 decimals coincide. The cubic root of 20377206 is about 273.1376353843.

The spelling of 20377206 in words is "twenty million, three hundred seventy-seven thousand, two hundred six".