14212640 has 48 divisors (see below), whose sum is σ = 36165528. Its totient is φ = 5246976.

The previous prime is 14212637. The next prime is 14212651. The reversal of 14212640 is 4621241.

It can be written as a sum of positive squares in 4 ways, for example, as 5895184 + 8317456 = 2428^2 + 2884^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1337 + ... + 5496.

Almost surely, 2^14212640 is an apocalyptic number.

14212640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

14212640 is an abundant number, since it is smaller than the sum of its proper divisors (21952888).

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

14212640 is a wasteful number, since it uses less digits than its factorization.

14212640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6861 (or 6853 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 14212640 is about 3769.9655170837. The cubic root of 14212640 is about 242.2283208196.

Adding to 14212640 its reverse (4621241), we get a palindrome (18833881).

The spelling of 14212640 in words is "fourteen million, two hundred twelve thousand, six hundred forty".