20326151 has 4 divisors (see below), whose sum is σ = 20336400. Its totient is φ = 20315904.

The previous prime is 20326099. The next prime is 20326157. The reversal of 20326151 is 15162302.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 20326151 - 2²² = 16131847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20326157) 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, 1091 + ... + 6468.

It is an arithmetic number, because the mean of its divisors is an integer number (5084100).

Almost surely, 2^20326151 is an apocalyptic number.

20326151 is a deficient number, since it is larger than the sum of its proper divisors (10249).

20326151 is an equidigital number, since it uses as much as digits as its factorization.

20326151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10248.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 20326151 is about 4508.4532824462. The cubic root of 20326151 is about 272.9093295569.

Adding to 20326151 its reverse (15162302), we get a palindrome (35488453).

The spelling of 20326151 in words is "twenty million, three hundred twenty-six thousand, one hundred fifty-one".