14428690 has 8 divisors (see below), whose sum is σ = 25971660. Its totient is φ = 5771472.

The previous prime is 14428681. The next prime is 14428697. The reversal of 14428690 is 9682441.

It can be written as a sum of positive squares in 2 ways, for example, as 12047841 + 2380849 = 3471^2 + 1543^2 .

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

It is a super-2 number, since 2×14428690² = 416374190232200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (14428697) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 721425 + ... + 721444.

Almost surely, 2^14428690 is an apocalyptic number.

14428690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

14428690 is a deficient number, since it is larger than the sum of its proper divisors (11542970).

14428690 is a wasteful number, since it uses less digits than its factorization.

14428690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1442876.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 14428690 is about 3798.5115505945. The cubic root of 14428690 is about 243.4495452076.

The spelling of 14428690 in words is "fourteen million, four hundred twenty-eight thousand, six hundred ninety".