20460918 has 8 divisors (see below), whose sum is σ = 40921848. Its totient is φ = 6820304.

The previous prime is 20460917. The next prime is 20460931. The reversal of 20460918 is 81906402.

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

20460918 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20460917) 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, 1705071 + ... + 1705082.

It is an arithmetic number, because the mean of its divisors is an integer number (5115231).

Almost surely, 2^20460918 is an apocalyptic number.

20460918 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.

20460918 is a wasteful number, since it uses less digits than its factorization.

20460918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3410158.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 20460918 is about 4523.3746252107. The cubic root of 20460918 is about 273.5111517277.

The spelling of 20460918 in words is "twenty million, four hundred sixty thousand, nine hundred eighteen".