20344499 has 4 divisors (see below), whose sum is σ = 23250864. Its totient is φ = 17438136.

The previous prime is 20344481. The next prime is 20344501. The reversal of 20344499 is 99444302.

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 20344499 - 2¹² = 20340403 is a prime.

It is a super-2 number, since 2×20344499² = 827797279122002, which contains 22 as substring.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (20344469) 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, 1453172 + ... + 1453185.

It is an arithmetic number, because the mean of its divisors is an integer number (5812716).

Almost surely, 2^20344499 is an apocalyptic number.

20344499 is a deficient number, since it is larger than the sum of its proper divisors (2906365).

20344499 is an equidigital number, since it uses as much as digits as its factorization.

20344499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2906364.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 20344499 is about 4510.4876676475. The cubic root of 20344499 is about 272.9914214142.

The spelling of 20344499 in words is "twenty million, three hundred forty-four thousand, four hundred ninety-nine".