21074334 has 8 divisors (see below), whose sum is σ = 42148680. Its totient is φ = 7024776.

The previous prime is 21074323. The next prime is 21074353. The reversal of 21074334 is 43347012.

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

21074334 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1756189 + ... + 1756200.

It is an arithmetic number, because the mean of its divisors is an integer number (5268585).

Almost surely, 2^21074334 is an apocalyptic number.

21074334 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21074334 is a wasteful number, since it uses less digits than its factorization.

21074334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3512394.

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 21074334 is about 4590.6790347398. The cubic root of 21074334 is about 276.2175610784.

It can be divided in two parts, 2107 and 4334, that added together give a triangular number (6441 = T₁₁₃).

The spelling of 21074334 in words is "twenty-one million, seventy-four thousand, three hundred thirty-four".