20450418 has 16 divisors (see below), whose sum is σ = 42006720. Its totient is φ = 6632496.

The previous prime is 20450411. The next prime is 20450467. The reversal of 20450418 is 81405402.

It is not an unprimeable number, because it can be changed into a prime (20450411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45838 + ... + 46281.

It is an arithmetic number, because the mean of its divisors is an integer number (2625420).

Almost surely, 2^20450418 is an apocalyptic number.

20450418 is an abundant number, since it is smaller than the sum of its proper divisors (21556302).

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

20450418 is a wasteful number, since it uses less digits than its factorization.

20450418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92161.

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 20450418 is about 4522.2138383761. The cubic root of 20450418 is about 273.4643575012.

The spelling of 20450418 in words is "twenty million, four hundred fifty thousand, four hundred eighteen".