20303669 has 4 divisors (see below), whose sum is σ = 20500896. Its totient is φ = 20106444.

The previous prime is 20303663. The next prime is 20303681. The reversal of 20303669 is 96630302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 96630302 = 2 ⋅48315151.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20303669 is a prime.

It is a super-2 number, since 2×20303669² = 824477949723122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20303663) 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, 98459 + ... + 98664.

It is an arithmetic number, because the mean of its divisors is an integer number (5125224).

Almost surely, 2^20303669 is an apocalyptic number.

It is an amenable number.

20303669 is a deficient number, since it is larger than the sum of its proper divisors (197227).

20303669 is a wasteful number, since it uses less digits than its factorization.

20303669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197226.

The product of its (nonzero) digits is 5832, while the sum is 29.

The square root of 20303669 is about 4505.9592763362. The cubic root of 20303669 is about 272.8086741494.

The spelling of 20303669 in words is "twenty million, three hundred three thousand, six hundred sixty-nine".