21410434 has 8 divisors (see below), whose sum is σ = 32410620. Its totient is φ = 10606896.

The previous prime is 21410423. The next prime is 21410437. The reversal of 21410434 is 43401412.

It can be written as a sum of positive squares in 2 ways, for example, as 20729809 + 680625 = 4553^2 + 825^2 .

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

It is not an unprimeable number, because it can be changed into a prime (21410437) 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, 48889 + ... + 49324.

Almost surely, 2^21410434 is an apocalyptic number.

21410434 is a deficient number, since it is larger than the sum of its proper divisors (11000186).

21410434 is a wasteful number, since it uses less digits than its factorization.

21410434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98324.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 21410434 is about 4627.1410179505. The cubic root of 21410434 is about 277.6782243903.

Adding to 21410434 its reverse (43401412), we get a palindrome (64811846).

It can be divided in two parts, 214 and 10434, that added together give a cube (10648 = 22³).

The spelling of 21410434 in words is "twenty-one million, four hundred ten thousand, four hundred thirty-four".