20451068 has 48 divisors (see below), whose sum is σ = 43545600. Its totient is φ = 8282880.

The previous prime is 20451059. The next prime is 20451073. The reversal of 20451068 is 86015402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13493 + ... + 14931.

It is an arithmetic number, because the mean of its divisors is an integer number (907200).

Almost surely, 2^20451068 is an apocalyptic number.

It is an amenable number.

20451068 is an abundant number, since it is smaller than the sum of its proper divisors (23094532).

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

20451068 is a wasteful number, since it uses less digits than its factorization.

20451068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1490 (or 1488 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 20451068 is about 4522.2857052601. The cubic root of 20451068 is about 273.4672547517.

It can be divided in two parts, 2045 and 1068, that added together give a palindrome (3113).

The spelling of 20451068 in words is "twenty million, four hundred fifty-one thousand, sixty-eight".