20311852 has 24 divisors (see below), whose sum is σ = 40465152. Its totient is φ = 8830800.

The previous prime is 20311831. The next prime is 20311859. The reversal of 20311852 is 25811302.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (20311859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9024 + ... + 11047.

It is an arithmetic number, because the mean of its divisors is an integer number (1686048).

Almost surely, 2^20311852 is an apocalyptic number.

20311852 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20311852 is a deficient number, since it is larger than the sum of its proper divisors (20153300).

20311852 is a wasteful number, since it uses less digits than its factorization.

20311852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20109 (or 20107 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 20311852 is about 4506.8672046112. The cubic root of 20311852 is about 272.8453193084.

It can be divided in two parts, 2031 and 1852, that added together give a palindrome (3883).

The spelling of 20311852 in words is "twenty million, three hundred eleven thousand, eight hundred fifty-two".