21074363 has 8 divisors (see below), whose sum is σ = 22355520. Its totient is φ = 19810440.

The previous prime is 21074359. The next prime is 21074393. The reversal of 21074363 is 36347012.

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

It is a cyclic number.

It is not a de Polignac number, because 21074363 - 2² = 21074359 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21074323) 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, 1745 + ... + 6722.

It is an arithmetic number, because the mean of its divisors is an integer number (2794440).

Almost surely, 2^21074363 is an apocalyptic number.

21074363 is a deficient number, since it is larger than the sum of its proper divisors (1281157).

21074363 is a wasteful number, since it uses less digits than its factorization.

21074363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8617.

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 21074363 is about 4590.6821933129. The cubic root of 21074363 is about 276.2176877776.

The spelling of 21074363 in words is "twenty-one million, seventy-four thousand, three hundred sixty-three".