20122146 has 24 divisors (see below), whose sum is σ = 47561904. Its totient is φ = 6097560.

The previous prime is 20122133. The next prime is 20122147. The reversal of 20122146 is 64122102.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (20122147) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50616 + ... + 51011.

It is an arithmetic number, because the mean of its divisors is an integer number (1981746).

Almost surely, 2^20122146 is an apocalyptic number.

20122146 is an abundant number, since it is smaller than the sum of its proper divisors (27439758).

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

20122146 is a wasteful number, since it uses less digits than its factorization.

20122146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101646 (or 101643 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 20122146 is about 4485.7715055495. The cubic root of 20122146 is about 271.9932326027.

Adding to 20122146 its reverse (64122102), we get a palindrome (84244248).

The spelling of 20122146 in words is "twenty million, one hundred twenty-two thousand, one hundred forty-six".