21735034 has 8 divisors (see below), whose sum is σ = 32859648. Its totient is φ = 10781820.

The previous prime is 21735029. The next prime is 21735037. The reversal of 21735034 is 43053712.

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 (21735037) 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, 42532 + ... + 43039.

It is an arithmetic number, because the mean of its divisors is an integer number (4107456).

Almost surely, 2^21735034 is an apocalyptic number.

21735034 is a deficient number, since it is larger than the sum of its proper divisors (11124614).

21735034 is a wasteful number, since it uses less digits than its factorization.

21735034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85700.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 21735034 is about 4662.0847268148. The cubic root of 21735034 is about 279.0744695718.

Adding to 21735034 its reverse (43053712), we get a palindrome (64788746).

The spelling of 21735034 in words is "twenty-one million, seven hundred thirty-five thousand, thirty-four".