20434603 has 8 divisors (see below), whose sum is σ = 24369408. Its totient is φ = 16753704.

The previous prime is 20434597. The next prime is 20434607. The reversal of 20434603 is 30643402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20434603 - 2⁵ = 20434571 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20434607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63301 + ... + 63622.

It is an arithmetic number, because the mean of its divisors is an integer number (3046176).

Almost surely, 2^20434603 is an apocalyptic number.

20434603 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20434603 is a deficient number, since it is larger than the sum of its proper divisors (3934805).

20434603 is a wasteful number, since it uses less digits than its factorization.

20434603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126953.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 20434603 is about 4520.4649097189. The cubic root of 20434603 is about 273.3938462426.

The spelling of 20434603 in words is "twenty million, four hundred thirty-four thousand, six hundred three".