20432666 has 12 divisors (see below), whose sum is σ = 31246782. Its totient is φ = 10020816.

The previous prime is 20432663. The next prime is 20432669. The reversal of 20432666 is 66623402.

It is an interprime number because it is at equal distance from previous prime (20432663) and next prime (20432669).

It can be written as a sum of positive squares in 3 ways, for example, as 16168441 + 4264225 = 4021^2 + 2065^2 .

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (20432663) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3800 + ... + 7436.

Almost surely, 2^20432666 is an apocalyptic number.

20432666 is a deficient number, since it is larger than the sum of its proper divisors (10814116).

20432666 is an equidigital number, since it uses as much as digits as its factorization.

20432666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3745 (or 3692 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 20432666 is about 4520.2506567667. The cubic root of 20432666 is about 273.3852076176.

The spelling of 20432666 in words is "twenty million, four hundred thirty-two thousand, six hundred sixty-six".