20352080 has 40 divisors (see below), whose sum is σ = 54079872. Its totient is φ = 6977664.

The previous prime is 20352061. The next prime is 20352083. The reversal of 20352080 is 8025302.

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

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20352083) 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, 17612 + ... + 18731.

Almost surely, 2^20352080 is an apocalyptic number.

20352080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20352080 is an abundant number, since it is smaller than the sum of its proper divisors (33727792).

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

20352080 is a wasteful number, since it uses less digits than its factorization.

20352080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36363 (or 36357 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 20352080 is about 4511.3279641365. The cubic root of 20352080 is about 273.0253255989.

Adding to 20352080 its reverse (8025302), we get a palindrome (28377382).

The spelling of 20352080 in words is "twenty million, three hundred fifty-two thousand, eighty".