14387890 has 32 divisors (see below), whose sum is σ = 28486080. Its totient is φ = 5188800.

The previous prime is 14387873. The next prime is 14387897. The reversal of 14387890 is 9878341.

It is a super-2 number, since 2×14387890² = 414022757304200, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (14387897) 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 15 ways as a sum of consecutive naturals, for example, 14820 + ... + 15760.

It is an arithmetic number, because the mean of its divisors is an integer number (890190).

Almost surely, 2^14387890 is an apocalyptic number.

14387890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

14387890 is a deficient number, since it is larger than the sum of its proper divisors (14098190).

14387890 is a wasteful number, since it uses less digits than its factorization.

14387890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1098.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 14387890 is about 3793.1372239876. The cubic root of 14387890 is about 243.2198611903.

The spelling of 14387890 in words is "fourteen million, three hundred eighty-seven thousand, eight hundred ninety".