20941280 has 48 divisors (see below), whose sum is σ = 52390800. Its totient is φ = 7882752.

The previous prime is 20941279. The next prime is 20941313. The reversal of 20941280 is 8214902.

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 7 ways as a sum of consecutive naturals, for example, 1130 + ... + 6569.

It is an arithmetic number, because the mean of its divisors is an integer number (1091475).

Almost surely, 2^20941280 is an apocalyptic number.

20941280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20941280 is an abundant number, since it is smaller than the sum of its proper divisors (31449520).

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

20941280 is a wasteful number, since it uses less digits than its factorization.

20941280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7731 (or 7723 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 20941280 is about 4576.1643327136. The cubic root of 20941280 is about 275.6350283354.

The spelling of 20941280 in words is "twenty million, nine hundred forty-one thousand, two hundred eighty".