20607312 has 80 divisors (see below), whose sum is σ = 59996160. Its totient is φ = 6038400.

The previous prime is 20607311. The next prime is 20607319. The reversal of 20607312 is 21370602.

It is a happy number.

It is a super-2 number, since 2×20607312² = 849322615730688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20607311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15739 + ... + 16997.

It is an arithmetic number, because the mean of its divisors is an integer number (749952).

Almost surely, 2^20607312 is an apocalyptic number.

20607312 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 20607312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29998080).

20607312 is an abundant number, since it is smaller than the sum of its proper divisors (39388848).

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

20607312 is a wasteful number, since it uses less digits than its factorization.

20607312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1312 (or 1306 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 20607312 is about 4539.5277287401. The cubic root of 20607312 is about 274.1619090318.

Adding to 20607312 its reverse (21370602), we get a palindrome (41977914).

The spelling of 20607312 in words is "twenty million, six hundred seven thousand, three hundred twelve".