14220520 has 16 divisors (see below), whose sum is σ = 31996260. Its totient is φ = 5688192.

The previous prime is 14220439. The next prime is 14220533. The reversal of 14220520 is 2502241.

It can be written as a sum of positive squares in 2 ways, for example, as 13853284 + 367236 = 3722^2 + 606^2 .

It is a junction number, because it is equal to n+sod(n) for n = 14220494 and 14220503.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177717 + ... + 177796.

Almost surely, 2^14220520 is an apocalyptic number.

14220520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

14220520 is an abundant number, since it is smaller than the sum of its proper divisors (17775740).

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

14220520 is a wasteful number, since it uses less digits than its factorization.

14220520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355524 (or 355520 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 14220520 is about 3771.0104746606. The cubic root of 14220520 is about 242.2730792532.

Adding to 14220520 its reverse (2502241), we get a palindrome (16722761).

The spelling of 14220520 in words is "fourteen million, two hundred twenty thousand, five hundred twenty".