21873062 has 4 divisors (see below), whose sum is σ = 32809596. Its totient is φ = 10936530.

The previous prime is 21873053. The next prime is 21873077. The reversal of 21873062 is 26037812.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5468264 + ... + 5468267.

It is an arithmetic number, because the mean of its divisors is an integer number (8202399).

Almost surely, 2^21873062 is an apocalyptic number.

21873062 is a deficient number, since it is larger than the sum of its proper divisors (10936534).

21873062 is a wasteful number, since it uses less digits than its factorization.

21873062 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10936533.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 21873062 is about 4676.8645479637. The cubic root of 21873062 is about 279.6639761558.

The spelling of 21873062 in words is "twenty-one million, eight hundred seventy-three thousand, sixty-two".