20541612 has 72 divisors (see below), whose sum is σ = 59356416. Its totient is φ = 5413824.

The previous prime is 20541611. The next prime is 20541613. The reversal of 20541612 is 21614502.

It is an interprime number because it is at equal distance from previous prime (20541611) and next prime (20541613).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20541611) 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, 13473 + ... + 14919.

Almost surely, 2^20541612 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 20541612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29678208).

20541612 is an abundant number, since it is smaller than the sum of its proper divisors (38814804).

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

20541612 is a wasteful number, since it uses less digits than its factorization.

20541612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1487 (or 1472 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 20541612 is about 4532.2855161607. The cubic root of 20541612 is about 273.8702388752.

The spelling of 20541612 in words is "twenty million, five hundred forty-one thousand, six hundred twelve".