20122152 has 64 divisors (see below), whose sum is σ = 53784000. Its totient is φ = 6251520.

The previous prime is 20122147. The next prime is 20122153. The reversal of 20122152 is 25122102.

It is a super-2 number, since 2×20122152² = 809802002222208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20122153) 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, 60627 + ... + 60957.

It is an arithmetic number, because the mean of its divisors is an integer number (840375).

Almost surely, 2^20122152 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20122152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26892000).

20122152 is an abundant number, since it is smaller than the sum of its proper divisors (33661848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20122152 is a wasteful number, since it uses less digits than its factorization.

20122152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506 (or 502 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 20122152 is about 4485.7721743307. The cubic root of 20122152 is about 271.9932596369.

Adding to 20122152 its reverse (25122102), we get a palindrome (45244254).

The spelling of 20122152 in words is "twenty million, one hundred twenty-two thousand, one hundred fifty-two".