20269667 has 8 divisors (see below), whose sum is σ = 22149120. Its totient is φ = 18396360.

The previous prime is 20269657. The next prime is 20269687. The reversal of 20269667 is 76696202.

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 20269667 - 2⁴ = 20269651 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20269667.

It is not an unprimeable number, because it can be changed into a prime (20269657) 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, 7934 + ... + 10172.

It is an arithmetic number, because the mean of its divisors is an integer number (2768640).

Almost surely, 2^20269667 is an apocalyptic number.

20269667 is a deficient number, since it is larger than the sum of its proper divisors (1879453).

20269667 is a wasteful number, since it uses less digits than its factorization.

20269667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3073.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 20269667 is about 4502.1846919024. The cubic root of 20269667 is about 272.6563006469.

The spelling of 20269667 in words is "twenty million, two hundred sixty-nine thousand, six hundred sixty-seven".