21414230 has 16 divisors (see below), whose sum is σ = 38607840. Its totient is φ = 8551872.

The previous prime is 21414229. The next prime is 21414241. The reversal of 21414230 is 3241412.

It is a junction number, because it is equal to n+sod(n) for n = 21414199 and 21414208.

It is a congruent number.

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, 6767 + ... + 9413.

It is an arithmetic number, because the mean of its divisors is an integer number (2412990).

Almost surely, 2^21414230 is an apocalyptic number.

21414230 is a deficient number, since it is larger than the sum of its proper divisors (17193610).

21414230 is a wasteful number, since it uses less digits than its factorization.

21414230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3463.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 21414230 is about 4627.5511882636. The cubic root of 21414230 is about 277.6946339012.

Adding to 21414230 its reverse (3241412), we get a palindrome (24655642).

The spelling of 21414230 in words is "twenty-one million, four hundred fourteen thousand, two hundred thirty".