20852418 has 8 divisors (see below), whose sum is σ = 41704848. Its totient is φ = 6950804.

The previous prime is 20852411. The next prime is 20852431. The reversal of 20852418 is 81425802.

20852418 is an esthetic number in base 9, because in such base its adjacent digits differ by 1.

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

20852418 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (20852411) 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, 1737696 + ... + 1737707.

It is an arithmetic number, because the mean of its divisors is an integer number (5213106).

Almost surely, 2^20852418 is an apocalyptic number.

20852418 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20852418 is a wasteful number, since it uses less digits than its factorization.

20852418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3475408.

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 20852418 is about 4566.4447877972. Note that the first 3 decimals coincide. The cubic root of 20852418 is about 275.2446000058.

The spelling of 20852418 in words is "twenty million, eight hundred fifty-two thousand, four hundred eighteen".