20460312 has 96 divisors (see below), whose sum is σ = 58968000. Its totient is φ = 6397440.

The previous prime is 20460301. The next prime is 20460313. The reversal of 20460312 is 21306402.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20460313) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 85489 + ... + 85727.

It is an arithmetic number, because the mean of its divisors is an integer number (614250).

Almost surely, 2^20460312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20460312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29484000).

20460312 is an abundant number, since it is smaller than the sum of its proper divisors (38507688).

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

20460312 is a wasteful number, since it uses less digits than its factorization.

20460312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321 (or 314 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 20460312 is about 4523.3076393277. The cubic root of 20460312 is about 273.5084514677.

Adding to 20460312 its reverse (21306402), we get a palindrome (41766714).

It can be divided in two parts, 204 and 60312, that added together give a square (60516 = 246²).

The spelling of 20460312 in words is "twenty million, four hundred sixty thousand, three hundred twelve".