20340330 has 32 divisors (see below), whose sum is σ = 51689664. Its totient is φ = 5104896.

The previous prime is 20340323. The next prime is 20340373. The reversal of 20340330 is 3304302.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 19432 + ... + 20451.

It is an arithmetic number, because the mean of its divisors is an integer number (1615302).

Almost surely, 2^20340330 is an apocalyptic number.

20340330 is an abundant number, since it is smaller than the sum of its proper divisors (31349334).

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

20340330 is a wasteful number, since it uses less digits than its factorization.

20340330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39910.

The product of its (nonzero) digits is 216, while the sum is 15.

The square root of 20340330 is about 4510.0254988193. The cubic root of 20340330 is about 272.9727729827.

Adding to 20340330 its reverse (3304302), we get a palindrome (23644632).

The spelling of 20340330 in words is "twenty million, three hundred forty thousand, three hundred thirty".