20535418 has 8 divisors (see below), whose sum is σ = 31193280. Its totient is φ = 10137660.

The previous prime is 20535413. The next prime is 20535461. The reversal of 20535418 is 81453502.

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 (20535413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64828 + ... + 65143.

It is an arithmetic number, because the mean of its divisors is an integer number (3899160).

Almost surely, 2^20535418 is an apocalyptic number.

20535418 is a deficient number, since it is larger than the sum of its proper divisors (10657862).

20535418 is a wasteful number, since it uses less digits than its factorization.

20535418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130052.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 20535418 is about 4531.6021449373. The cubic root of 20535418 is about 273.8427090204.

The spelling of 20535418 in words is "twenty million, five hundred thirty-five thousand, four hundred eighteen".