20910010 has 32 divisors (see below), whose sum is σ = 41425344. Its totient is φ = 7598800.

The previous prime is 20909989. The next prime is 20910011. The reversal of 20910010 is 1001902.

It is not an unprimeable number, because it can be changed into a prime (20910011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12525 + ... + 14095.

It is an arithmetic number, because the mean of its divisors is an integer number (1294542).

Almost surely, 2^20910010 is an apocalyptic number.

20910010 is a deficient number, since it is larger than the sum of its proper divisors (20515334).

20910010 is a wasteful number, since it uses less digits than its factorization.

20910010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1611 (or 1589 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 20910010 is about 4572.7464395044. The cubic root of 20910010 is about 275.4977651407.

Adding to 20910010 its reverse (1001902), we get a palindrome (21911912).

The spelling of 20910010 in words is "twenty million, nine hundred ten thousand, ten".