20152869 has 16 divisors (see below), whose sum is σ = 29450304. Its totient is φ = 12156800.

The previous prime is 20152861. The next prime is 20152889. The reversal of 20152869 is 96825102.

It is a cyclic number.

It is not a de Polignac number, because 20152869 - 2³ = 20152861 is a prime.

It is a super-2 number, since 2×20152869² = 812276257862322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20152861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6379 + ... + 8999.

It is an arithmetic number, because the mean of its divisors is an integer number (1840644).

Almost surely, 2^20152869 is an apocalyptic number.

It is an amenable number.

20152869 is a deficient number, since it is larger than the sum of its proper divisors (9297435).

20152869 is a wasteful number, since it uses less digits than its factorization.

20152869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2868.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 20152869 is about 4489.1946939290. The cubic root of 20152869 is about 272.1315909193.

It can be divided in two parts, 2015 and 2869, that added together give a palindrome (4884).

The spelling of 20152869 in words is "twenty million, one hundred fifty-two thousand, eight hundred sixty-nine".