21410734 has 4 divisors (see below), whose sum is σ = 32116104. Its totient is φ = 10705366.

The previous prime is 21410731. The next prime is 21410747. The reversal of 21410734 is 43701412.

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 (21410731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5352682 + ... + 5352685.

It is an arithmetic number, because the mean of its divisors is an integer number (8029026).

Almost surely, 2^21410734 is an apocalyptic number.

21410734 is a deficient number, since it is larger than the sum of its proper divisors (10705370).

21410734 is a wasteful number, since it uses less digits than its factorization.

21410734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10705369.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 21410734 is about 4627.1734352626. The cubic root of 21410734 is about 277.6795213137.

The spelling of 21410734 in words is "twenty-one million, four hundred ten thousand, seven hundred thirty-four".