20912060 has 72 divisors (see below), whose sum is σ = 49805280. Its totient is φ = 7358208.

The previous prime is 20912053. The next prime is 20912069. The reversal of 20912060 is 6021902.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20912069) 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, 77606 + ... + 77874.

It is an arithmetic number, because the mean of its divisors is an integer number (691740).

Almost surely, 2^20912060 is an apocalyptic number.

20912060 is a gapful number since it is divisible by the number (20) 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 20912060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24902640).

20912060 is an abundant number, since it is smaller than the sum of its proper divisors (28893220).

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

20912060 is a wasteful number, since it uses less digits than its factorization.

20912060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327 (or 312 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 20912060 is about 4572.9705881407. The cubic root of 20912060 is about 275.5067680372.

Adding to 20912060 its reverse (6021902), we get a palindrome (26933962).

The spelling of 20912060 in words is "twenty million, nine hundred twelve thousand, sixty".