21076741 has 8 divisors (see below), whose sum is σ = 24116480. Its totient is φ = 18044208.

The previous prime is 21076739. The next prime is 21076789. The reversal of 21076741 is 14767012.

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

It is not a de Polignac number, because 21076741 - 2¹ = 21076739 is a prime.

It is a super-2 number, since 2×21076741² = 888458022362162, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21076711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8155 + ... + 10423.

It is an arithmetic number, because the mean of its divisors is an integer number (3014560).

Almost surely, 2^21076741 is an apocalyptic number.

It is an amenable number.

21076741 is a deficient number, since it is larger than the sum of its proper divisors (3039739).

21076741 is a wasteful number, since it uses less digits than its factorization.

21076741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3603.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 21076741 is about 4590.9411889067. The cubic root of 21076741 is about 276.2280767189.

The spelling of 21076741 in words is "twenty-one million, seventy-six thousand, seven hundred forty-one".