21373467 has 8 divisors (see below), whose sum is σ = 28523520. Its totient is φ = 14236200.

The previous prime is 21373447. The next prime is 21373487. The reversal of 21373467 is 76437312.

It is an interprime number because it is at equal distance from previous prime (21373447) and next prime (21373487).

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

It is not a de Polignac number, because 21373467 - 2¹² = 21369371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21373447) 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, 1842 + ... + 6792.

It is an arithmetic number, because the mean of its divisors is an integer number (3565440).

Almost surely, 2^21373467 is an apocalyptic number.

21373467 is a deficient number, since it is larger than the sum of its proper divisors (7150053).

21373467 is a wasteful number, since it uses less digits than its factorization.

21373467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6393.

The product of its digits is 21168, while the sum is 33.

The square root of 21373467 is about 4623.1447089616. The cubic root of 21373467 is about 277.5183203553.

The spelling of 21373467 in words is "twenty-one million, three hundred seventy-three thousand, four hundred sixty-seven".