20122404 has 48 divisors (see below), whose sum is σ = 49533120. Its totient is φ = 6348160.

The previous prime is 20122397. The next prime is 20122429. The reversal of 20122404 is 40422102.

It is a super-2 number, since 2×20122404² = 809822285478432, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17899 + ... + 18989.

It is an arithmetic number, because the mean of its divisors is an integer number (1031940).

Almost surely, 2^20122404 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 20122404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24766560).

20122404 is an abundant number, since it is smaller than the sum of its proper divisors (29410716).

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

20122404 is a wasteful number, since it uses less digits than its factorization.

20122404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1180 (or 1178 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 20122404 is about 4485.8002630523. The cubic root of 20122404 is about 271.9943950690.

Adding to 20122404 its reverse (40422102), we get a palindrome (60544506).

The spelling of 20122404 in words is "twenty million, one hundred twenty-two thousand, four hundred four".