20324099 has 4 divisors (see below), whose sum is σ = 21024960. Its totient is φ = 19623240.

The previous prime is 20324089. The next prime is 20324113. The reversal of 20324099 is 99042302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20324099 - 2²⁴ = 3546883 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 700831 = 20324099 / (2 + 0 + 3 + 2 + 4 + 0 + 9 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20324009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 350387 + ... + 350444.

It is an arithmetic number, because the mean of its divisors is an integer number (5256240).

Almost surely, 2^20324099 is an apocalyptic number.

20324099 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

20324099 is a deficient number, since it is larger than the sum of its proper divisors (700861).

20324099 is an equidigital number, since it uses as much as digits as its factorization.

20324099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700860.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 20324099 is about 4508.2257041989. The cubic root of 20324099 is about 272.9001455130.

The spelling of 20324099 in words is "twenty million, three hundred twenty-four thousand, ninety-nine".