20046660 has 48 divisors (see below), whose sum is σ = 56414400. Its totient is φ = 5318784.

The previous prime is 20046659. The next prime is 20046671. The reversal of 20046660 is 6664002.

It is a self number, because there is not a number n which added to its sum of digits gives 20046660.

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 15 ways as a sum of consecutive naturals, for example, 13011 + ... + 14469.

It is an arithmetic number, because the mean of its divisors is an integer number (1175300).

Almost surely, 2^20046660 is an apocalyptic number.

20046660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20046660 is an abundant number, since it is smaller than the sum of its proper divisors (36367740).

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

20046660 is a wasteful number, since it uses less digits than its factorization.

20046660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1700 (or 1698 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 20046660 is about 4477.3496624677. The cubic root of 20046660 is about 271.6526889233.

It can be divided in two parts, 20046 and 660, that added together give a triangular number (20706 = T₂₀₃).

The spelling of 20046660 in words is "twenty million, forty-six thousand, six hundred sixty".