21136034 has 8 divisors (see below), whose sum is σ = 33082560. Its totient is φ = 10108516.

The previous prime is 21136007. The next prime is 21136039. The reversal of 21136034 is 43063112.

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

It is a junction number, because it is equal to n+sod(n) for n = 21135997 and 21136015.

It is not an unprimeable number, because it can be changed into a prime (21136039) 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, 229694 + ... + 229785.

It is an arithmetic number, because the mean of its divisors is an integer number (4135320).

Almost surely, 2^21136034 is an apocalyptic number.

21136034 is a deficient number, since it is larger than the sum of its proper divisors (11946526).

21136034 is a wasteful number, since it uses less digits than its factorization.

21136034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459504.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 21136034 is about 4597.3942619706. The cubic root of 21136034 is about 276.4868620907.

Adding to 21136034 its reverse (43063112), we get a palindrome (64199146).

The spelling of 21136034 in words is "twenty-one million, one hundred thirty-six thousand, thirty-four".