20461718 has 16 divisors (see below), whose sum is σ = 31349184. Its totient is φ = 10013760.

The previous prime is 20461709. The next prime is 20461739. The reversal of 20461718 is 81716402.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 44546 + ... + 45002.

It is an arithmetic number, because the mean of its divisors is an integer number (1959324).

Almost surely, 2^20461718 is an apocalyptic number.

20461718 is a deficient number, since it is larger than the sum of its proper divisors (10887466).

20461718 is a wasteful number, since it uses less digits than its factorization.

20461718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 20461718 is about 4523.4630539002. The cubic root of 20461718 is about 273.5147163457.

The spelling of 20461718 in words is "twenty million, four hundred sixty-one thousand, seven hundred eighteen".