20541312 has 96 divisors (see below), whose sum is σ = 64523160. Its totient is φ = 6220800.

The previous prime is 20541307. The next prime is 20541317. The reversal of 20541312 is 21314502.

It is an interprime number because it is at equal distance from previous prime (20541307) and next prime (20541317).

It is a tau number, because it is divible by the number of its divisors (96).

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 (20541317) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11862 + ... + 13482.

Almost surely, 2^20541312 is an apocalyptic number.

20541312 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 20541312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32261580).

20541312 is an abundant number, since it is smaller than the sum of its proper divisors (43981848).

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

20541312 is a wasteful number, since it uses less digits than its factorization.

20541312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1652 (or 1637 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 20541312 is about 4532.2524201549. The cubic root of 20541312 is about 273.8689056226.

Adding to 20541312 its reverse (21314502), we get a palindrome (41855814).

The spelling of 20541312 in words is "twenty million, five hundred forty-one thousand, three hundred twelve".