20330955 has 12 divisors (see below), whose sum is σ = 35240400. Its totient is φ = 10843152.

The previous prime is 20330953. The next prime is 20330971. The reversal of 20330955 is 55903302.

It is not a de Polignac number, because 20330955 - 2¹ = 20330953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20330951) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 225855 + ... + 225944.

It is an arithmetic number, because the mean of its divisors is an integer number (2936700).

Almost surely, 2^20330955 is an apocalyptic number.

20330955 is a deficient number, since it is larger than the sum of its proper divisors (14909445).

20330955 is a wasteful number, since it uses less digits than its factorization.

20330955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451810 (or 451807 counting only the distinct ones).

The product of its (nonzero) digits is 4050, while the sum is 27.

The square root of 20330955 is about 4508.9860279225. The cubic root of 20330955 is about 272.9308281860.

The spelling of 20330955 in words is "twenty million, three hundred thirty thousand, nine hundred fifty-five".