20299449 has 8 divisors (see below), whose sum is σ = 27999360. Its totient is φ = 13066256.

The previous prime is 20299439. The next prime is 20299453. The reversal of 20299449 is 94499202.

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 20299449 - 2⁵ = 20299417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20299439) 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, 116577 + ... + 116750.

It is an arithmetic number, because the mean of its divisors is an integer number (3499920).

Almost surely, 2^20299449 is an apocalyptic number.

20299449 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

20299449 is a deficient number, since it is larger than the sum of its proper divisors (7699911).

20299449 is a wasteful number, since it uses less digits than its factorization.

20299449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233359.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 20299449 is about 4505.4909832337. The cubic root of 20299449 is about 272.7897722722.

The spelling of 20299449 in words is "twenty million, two hundred ninety-nine thousand, four hundred forty-nine".