20541600 has 180 divisors, whose sum is σ = 75147534. Its totient is φ = 5460480.

The previous prime is 20541583. The next prime is 20541601. The reversal of 20541600 is 614502.

It is a happy number.

20541600 is a `hidden beast` number, since 20 + 5 + 41 + 600 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 9809424 + 10732176 = 3132^2 + 3276^2 .

It is a tau number, because it is divible by the number of its divisors (180).

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

It is not an unprimeable number, because it can be changed into a prime (20541601) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 64642 + ... + 64958.

Almost surely, 2^20541600 is an apocalyptic number.

20541600 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 20541600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37573767).

20541600 is an abundant number, since it is smaller than the sum of its proper divisors (54605934).

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

20541600 is a wasteful number, since it uses less digits than its factorization.

20541600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349 (or 327 counting only the distinct ones).

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

The square root of 20541600 is about 4532.2841923251. The cubic root of 20541600 is about 273.8701855454.

The spelling of 20541600 in words is "twenty million, five hundred forty-one thousand, six hundred".