20220396 has 24 divisors (see below), whose sum is σ = 53921280. Its totient is φ = 5777232.

The previous prime is 20220383. The next prime is 20220407. The reversal of 20220396 is 69302202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120276 + ... + 120443.

It is an arithmetic number, because the mean of its divisors is an integer number (2246720).

Almost surely, 2^20220396 is an apocalyptic number.

It is an amenable number.

20220396 is an abundant number, since it is smaller than the sum of its proper divisors (33700884).

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

20220396 is a wasteful number, since it uses less digits than its factorization.

20220396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240733 (or 240731 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 20220396 is about 4496.7094635967. The cubic root of 20220396 is about 272.4351993603.

Adding to 20220396 its reverse (69302202), we get a palindrome (89522598).

The spelling of 20220396 in words is "twenty million, two hundred twenty thousand, three hundred ninety-six".