20412899 has 8 divisors (see below), whose sum is σ = 22451520. Its totient is φ = 18441216.

The previous prime is 20412893. The next prime is 20412913. The reversal of 20412899 is 99821402.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20412899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20412893) 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, 16094 + ... + 17315.

It is an arithmetic number, because the mean of its divisors is an integer number (2806440).

Almost surely, 2^20412899 is an apocalyptic number.

20412899 is a deficient number, since it is larger than the sum of its proper divisors (2038621).

20412899 is a wasteful number, since it uses less digits than its factorization.

20412899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33469.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 20412899 is about 4518.0636339034. The cubic root of 20412899 is about 273.2970195990.

The spelling of 20412899 in words is "twenty million, four hundred twelve thousand, eight hundred ninety-nine".