20945010 has 32 divisors (see below), whose sum is σ = 50388480. Its totient is φ = 5571968.

The previous prime is 20944981. The next prime is 20945039. The reversal of 20945010 is 1054902.

It is an interprime number because it is at equal distance from previous prime (20944981) and next prime (20945039).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23839 + ... + 24701.

It is an arithmetic number, because the mean of its divisors is an integer number (1574640).

Almost surely, 2^20945010 is an apocalyptic number.

20945010 is an abundant number, since it is smaller than the sum of its proper divisors (29443470).

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

20945010 is a wasteful number, since it uses less digits than its factorization.

20945010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1682.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 20945010 is about 4576.5718611205. The cubic root of 20945010 is about 275.6513924676.

Adding to 20945010 its reverse (1054902), we get a palindrome (21999912).

The spelling of 20945010 in words is "twenty million, nine hundred forty-five thousand, ten".