21734654 has 8 divisors (see below), whose sum is σ = 32773248. Its totient is φ = 10810240.

The previous prime is 21734621. The next prime is 21734681. The reversal of 21734654 is 45643712.

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

It is a self number, because there is not a number n which added to its sum of digits gives 21734654.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28067 + ... + 28830.

It is an arithmetic number, because the mean of its divisors is an integer number (4096656).

Almost surely, 2^21734654 is an apocalyptic number.

21734654 is a deficient number, since it is larger than the sum of its proper divisors (11038594).

21734654 is a wasteful number, since it uses less digits than its factorization.

21734654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57090.

The product of its digits is 20160, while the sum is 32.

The square root of 21734654 is about 4662.0439723366. The cubic root of 21734654 is about 279.0728431820.

The spelling of 21734654 in words is "twenty-one million, seven hundred thirty-four thousand, six hundred fifty-four".