20041650 has 36 divisors (see below), whose sum is σ = 53846442. Its totient is φ = 5344320.

The previous prime is 20041649. The next prime is 20041673. The reversal of 20041650 is 5614002.

It is a happy number.

20041650 is a `hidden beast` number, since 200 + 416 + 50 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 19527561 + 514089 = 4419^2 + 717^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 21819 + ... + 22718.

Almost surely, 2^20041650 is an apocalyptic number.

20041650 is an abundant number, since it is smaller than the sum of its proper divisors (33804792).

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

20041650 is a wasteful number, since it uses less digits than its factorization.

20041650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44555 (or 44547 counting only the distinct ones).

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

The square root of 20041650 is about 4476.7901447354. The cubic root of 20041650 is about 271.6300568346.

Adding to 20041650 its reverse (5614002), we get a palindrome (25655652).

The spelling of 20041650 in words is "twenty million, forty-one thousand, six hundred fifty".