20299213 has 8 divisors (see below), whose sum is σ = 22198176. Its totient is φ = 18409200.

The previous prime is 20299211. The next prime is 20299219. The reversal of 20299213 is 31299202.

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 20299213 - 2¹ = 20299211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20299211) 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, 3070 + ... + 7072.

It is an arithmetic number, because the mean of its divisors is an integer number (2774772).

Almost surely, 2^20299213 is an apocalyptic number.

It is an amenable number.

20299213 is a deficient number, since it is larger than the sum of its proper divisors (1898963).

20299213 is a wasteful number, since it uses less digits than its factorization.

20299213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4475.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 20299213 is about 4505.4647928932. The cubic root of 20299213 is about 272.7887151230.

The spelling of 20299213 in words is "twenty million, two hundred ninety-nine thousand, two hundred thirteen".