20461080 has 32 divisors (see below), whose sum is σ = 61383600. Its totient is φ = 5456256.

The previous prime is 20461061. The next prime is 20461093. The reversal of 20461080 is 8016402.

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, 85135 + ... + 85374.

Almost surely, 2^20461080 is an apocalyptic number.

20461080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20461080 is an abundant number, since it is smaller than the sum of its proper divisors (40922520).

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

20461080 is a wasteful number, since it uses less digits than its factorization.

20461080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170523 (or 170519 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 20461080 is about 4523.3925321599. The cubic root of 20461080 is about 273.5118735703.

Adding to 20461080 its reverse (8016402), we get a palindrome (28477482).

The spelling of 20461080 in words is "twenty million, four hundred sixty-one thousand, eighty".