20546480 has 20 divisors (see below), whose sum is σ = 47770752. Its totient is φ = 8218560.

The previous prime is 20546479. The next prime is 20546483. The reversal of 20546480 is 8464502.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (20546483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128336 + ... + 128495.

Almost surely, 2^20546480 is an apocalyptic number.

20546480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20546480 is an abundant number, since it is smaller than the sum of its proper divisors (27224272).

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

20546480 is a wasteful number, since it uses less digits than its factorization.

20546480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256844 (or 256838 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 20546480 is about 4532.8225202406. The cubic root of 20546480 is about 273.8918713064.

The spelling of 20546480 in words is "twenty million, five hundred forty-six thousand, four hundred eighty".