20662442 has 16 divisors (see below), whose sum is σ = 32848200. Its totient is φ = 9730560.

The previous prime is 20662423. The next prime is 20662451. The reversal of 20662442 is 24426602.

It can be written as a sum of positive squares in 4 ways, for example, as 17048641 + 3613801 = 4129^2 + 1901^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1967 + ... + 6722.

Almost surely, 2^20662442 is an apocalyptic number.

20662442 is a deficient number, since it is larger than the sum of its proper divisors (12185758).

20662442 is a wasteful number, since it uses less digits than its factorization.

20662442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8761.

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 20662442 is about 4545.5958905296. The cubic root of 20662442 is about 274.4061764966.

The spelling of 20662442 in words is "twenty million, six hundred sixty-two thousand, four hundred forty-two".