21414032 has 10 divisors (see below), whose sum is σ = 41489718. Its totient is φ = 10707008.

The previous prime is 21413993. The next prime is 21414037. The reversal of 21414032 is 23041412.

It can be written as a sum of positive squares in only one way, i.e., 16679056 + 4734976 = 4084^2 + 2176^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 21414032.

It is not an unprimeable number, because it can be changed into a prime (21414037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 669173 + ... + 669204.

Almost surely, 2^21414032 is an apocalyptic number.

It is an amenable number.

21414032 is a deficient number, since it is larger than the sum of its proper divisors (20075686).

21414032 is a wasteful number, since it uses less digits than its factorization.

21414032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1338385 (or 1338379 counting only the distinct ones).

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

The square root of 21414032 is about 4627.5297946096. The cubic root of 21414032 is about 277.6937780263.

Adding to 21414032 its reverse (23041412), we get a palindrome (44455444).

The spelling of 21414032 in words is "twenty-one million, four hundred fourteen thousand, thirty-two".