14247640 has 32 divisors (see below), whose sum is σ = 34972560. Its totient is φ = 5180800.

The previous prime is 14247637. The next prime is 14247643. The reversal of 14247640 is 4674241.

It is an interprime number because it is at equal distance from previous prime (14247637) and next prime (14247643).

It is a junction number, because it is equal to n+sod(n) for n = 14247599 and 14247608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14247643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15751 + ... + 16630.

Almost surely, 2^14247640 is an apocalyptic number.

14247640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

14247640 is an abundant number, since it is smaller than the sum of its proper divisors (20724920).

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

14247640 is a wasteful number, since it uses less digits than its factorization.

14247640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32403 (or 32399 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 14247640 is about 3774.6046150557. The cubic root of 14247640 is about 242.4269947099.

The spelling of 14247640 in words is "fourteen million, two hundred forty-seven thousand, six hundred forty".