20356330 has 8 divisors (see below), whose sum is σ = 36641412. Its totient is φ = 8142528.

The previous prime is 20356319. The next prime is 20356333. The reversal of 20356330 is 3365302.

It can be written as a sum of positive squares in 2 ways, for example, as 20151121 + 205209 = 4489^2 + 453^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (20356333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1017807 + ... + 1017826.

Almost surely, 2^20356330 is an apocalyptic number.

20356330 is a deficient number, since it is larger than the sum of its proper divisors (16285082).

20356330 is a wasteful number, since it uses less digits than its factorization.

20356330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2035640.

The product of its (nonzero) digits is 1620, while the sum is 22.

The square root of 20356330 is about 4511.7989760183. The cubic root of 20356330 is about 273.0443290108.

The spelling of 20356330 in words is "twenty million, three hundred fifty-six thousand, three hundred thirty".