20365312 has 60 divisors (see below), whose sum is σ = 44825256. Its totient is φ = 9175040.

The previous prime is 20365297. The next prime is 20365313. The reversal of 20365312 is 21356302.

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 (20365313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180168 + ... + 180280.

Almost surely, 2^20365312 is an apocalyptic number.

20365312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20365312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22412628).

20365312 is an abundant number, since it is smaller than the sum of its proper divisors (24459944).

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

20365312 is an equidigital number, since it uses as much as digits as its factorization.

20365312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152 (or 126 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 20365312 is about 4512.7942563339. The cubic root of 20365312 is about 273.0844823446.

The spelling of 20365312 in words is "twenty million, three hundred sixty-five thousand, three hundred twelve".