20206480 has 40 divisors (see below), whose sum is σ = 53692992. Its totient is φ = 6927744.

The previous prime is 20206453. The next prime is 20206493. The reversal of 20206480 is 8460202.

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

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, 17482 + ... + 18601.

Almost surely, 2^20206480 is an apocalyptic number.

20206480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20206480 is an abundant number, since it is smaller than the sum of its proper divisors (33486512).

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

20206480 is a wasteful number, since it uses less digits than its factorization.

20206480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36103 (or 36097 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 20206480 is about 4495.1618435825. The cubic root of 20206480 is about 272.3726869299.

Adding to 20206480 its reverse (8460202), we get a palindrome (28666682).

The spelling of 20206480 in words is "twenty million, two hundred six thousand, four hundred eighty".