20941630 has 16 divisors (see below), whose sum is σ = 38714400. Its totient is φ = 8150112.

The previous prime is 20941607. The next prime is 20941673. The reversal of 20941630 is 3614902.

It is a junction number, because it is equal to n+sod(n) for n = 20941595 and 20941604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27930 + ... + 28669.

It is an arithmetic number, because the mean of its divisors is an integer number (2419650).

Almost surely, 2^20941630 is an apocalyptic number.

20941630 is a deficient number, since it is larger than the sum of its proper divisors (17772770).

20941630 is a wasteful number, since it uses less digits than its factorization.

20941630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56643.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 20941630 is about 4576.2025741875. The cubic root of 20941630 is about 275.6365639264.

The spelling of 20941630 in words is "twenty million, nine hundred forty-one thousand, six hundred thirty".