20446460 has 24 divisors (see below), whose sum is σ = 43119216. Its totient is φ = 8144000.

The previous prime is 20446441. The next prime is 20446463. The reversal of 20446460 is 6464402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20446463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2984 + ... + 7056.

It is an arithmetic number, because the mean of its divisors is an integer number (1796634).

Almost surely, 2^20446460 is an apocalyptic number.

20446460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20446460 is an abundant number, since it is smaller than the sum of its proper divisors (22672756).

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

20446460 is a wasteful number, since it uses less digits than its factorization.

20446460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4333 (or 4331 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 20446460 is about 4521.7761996808. The cubic root of 20446460 is about 273.4467141494.

It can be divided in two parts, 204 and 46460, that added together give a palindrome (46664).

The spelling of 20446460 in words is "twenty million, four hundred forty-six thousand, four hundred sixty".