20083280 has 40 divisors (see below), whose sum is σ = 53365632. Its totient is φ = 6885504.

The previous prime is 20083277. The next prime is 20083289. The reversal of 20083280 is 8238002.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20083289) 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, 17372 + ... + 18491.

Almost surely, 2^20083280 is an apocalyptic number.

20083280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20083280 is an abundant number, since it is smaller than the sum of its proper divisors (33282352).

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

20083280 is a wasteful number, since it uses less digits than its factorization.

20083280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35883 (or 35877 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 20083280 is about 4481.4372694483. The cubic root of 20083280 is about 271.8180010866.

The spelling of 20083280 in words is "twenty million, eighty-three thousand, two hundred eighty".