20432603 has 6 divisors (see below), whose sum is σ = 20647212. Its totient is φ = 20220200.

The previous prime is 20432597. The next prime is 20432609. The reversal of 20432603 is 30623402.

It is an interprime number because it is at equal distance from previous prime (20432597) and next prime (20432609).

It is a de Polignac number, because none of the positive numbers 2^k-20432603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20432609) 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, 9200 + ... + 11202.

It is an arithmetic number, because the mean of its divisors is an integer number (3441202).

Almost surely, 2^20432603 is an apocalyptic number.

20432603 is a deficient number, since it is larger than the sum of its proper divisors (214609).

20432603 is an equidigital number, since it uses as much as digits as its factorization.

20432603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2205 (or 2104 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 20432603 is about 4520.2436881212. The cubic root of 20432603 is about 273.3849266413.

The spelling of 20432603 in words is "twenty million, four hundred thirty-two thousand, six hundred three".