20791662 has 32 divisors (see below), whose sum is σ = 43998720. Its totient is φ = 6531840.

The previous prime is 20791657. The next prime is 20791691. The reversal of 20791662 is 26619702.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 30558 + ... + 31230.

It is an arithmetic number, because the mean of its divisors is an integer number (1374960).

Almost surely, 2^20791662 is an apocalyptic number.

20791662 is an abundant number, since it is smaller than the sum of its proper divisors (23207058).

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

20791662 is a wasteful number, since it uses less digits than its factorization.

20791662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 20791662 is about 4559.7874950484. The cubic root of 20791662 is about 274.9770206694.

It can be divided in two parts, 2079 and 1662, that added together give a triangular number (3741 = T₈₆).

The spelling of 20791662 in words is "twenty million, seven hundred ninety-one thousand, six hundred sixty-two".