20087418 has 32 divisors (see below), whose sum is σ = 45150336. Its totient is φ = 5911488.

The previous prime is 20087413. The next prime is 20087429. The reversal of 20087418 is 81478002.

It is not an unprimeable number, because it can be changed into a prime (20087413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3805 + ... + 7392.

It is an arithmetic number, because the mean of its divisors is an integer number (1410948).

Almost surely, 2^20087418 is an apocalyptic number.

20087418 is an abundant number, since it is smaller than the sum of its proper divisors (25062918).

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

20087418 is a wasteful number, since it uses less digits than its factorization.

20087418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11238.

The product of its (nonzero) digits is 3584, while the sum is 30.

The square root of 20087418 is about 4481.8989279099. The cubic root of 20087418 is about 271.8366684498.

The spelling of 20087418 in words is "twenty million, eighty-seven thousand, four hundred eighteen".