14001220 has 24 divisors (see below), whose sum is σ = 29510208. Its totient is φ = 5580000.

The previous prime is 14001209. The next prime is 14001223. The reversal of 14001220 is 2210041.

It is a super-2 number, since 2×14001220² = 392068322976800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 14001197 and 14001206.

It is not an unprimeable number, because it can be changed into a prime (14001223) 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, 5095 + ... + 7345.

It is an arithmetic number, because the mean of its divisors is an integer number (1229592).

Almost surely, 2^14001220 is an apocalyptic number.

14001220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

14001220 is an abundant number, since it is smaller than the sum of its proper divisors (15508988).

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

14001220 is a wasteful number, since it uses less digits than its factorization.

14001220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2571 (or 2569 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 14001220 is about 3741.8204125800. The cubic root of 14001220 is about 241.0212271036.

Adding to 14001220 its reverse (2210041), we get a palindrome (16211261).

The spelling of 14001220 in words is "fourteen million, one thousand, two hundred twenty".