14520820 has 24 divisors (see below), whose sum is σ = 31820544. Its totient is φ = 5555616.

The previous prime is 14520763. The next prime is 14520827. The reversal of 14520820 is 2802541.

It is a junction number, because it is equal to n+sod(n) for n = 14520791 and 14520800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14520827) 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, 15324 + ... + 16243.

It is an arithmetic number, because the mean of its divisors is an integer number (1325856).

Almost surely, 2^14520820 is an apocalyptic number.

14520820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

14520820 is an abundant number, since it is smaller than the sum of its proper divisors (17299724).

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

14520820 is a wasteful number, since it uses less digits than its factorization.

14520820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31599 (or 31597 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 14520820 is about 3810.6193722281. The cubic root of 14520820 is about 243.9666038679.

The spelling of 14520820 in words is "fourteen million, five hundred twenty thousand, eight hundred twenty".