21350614 has 4 divisors (see below), whose sum is σ = 32025924. Its totient is φ = 10675306.

The previous prime is 21350611. The next prime is 21350621. The reversal of 21350614 is 41605312.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21350611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5337652 + ... + 5337655.

It is an arithmetic number, because the mean of its divisors is an integer number (8006481).

Almost surely, 2^21350614 is an apocalyptic number.

21350614 is a deficient number, since it is larger than the sum of its proper divisors (10675310).

21350614 is a wasteful number, since it uses less digits than its factorization.

21350614 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10675309.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 21350614 is about 4620.6724618826. The cubic root of 21350614 is about 277.4193754360.

Adding to 21350614 its reverse (41605312), we get a palindrome (62955926).

The spelling of 21350614 in words is "twenty-one million, three hundred fifty thousand, six hundred fourteen".