14640431 has 8 divisors (see below), whose sum is σ = 16596720. Its totient is φ = 12802752.

The previous prime is 14640377. The next prime is 14640491. The reversal of 14640431 is 13404641.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 14640431 - 2¹⁰ = 14639407 is a prime.

It is a super-2 number, since 2×14640431² = 428684439731522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 14640397 and 14640406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14640491) 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, 29390 + ... + 29883.

It is an arithmetic number, because the mean of its divisors is an integer number (2074590).

Almost surely, 2^14640431 is an apocalyptic number.

14640431 is a deficient number, since it is larger than the sum of its proper divisors (1956289).

14640431 is a wasteful number, since it uses less digits than its factorization.

14640431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59305.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 14640431 is about 3826.2816153545. The cubic root of 14640431 is about 244.6346407639.

The spelling of 14640431 in words is "fourteen million, six hundred forty thousand, four hundred thirty-one".