21048262 has 4 divisors (see below), whose sum is σ = 31572396. Its totient is φ = 10524130.

The previous prime is 21048239. The next prime is 21048263. The reversal of 21048262 is 26284012.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21048263) by changing a digit.

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 as a sum of consecutive naturals, namely, 5262064 + ... + 5262067.

It is an arithmetic number, because the mean of its divisors is an integer number (7893099).

Almost surely, 2^21048262 is an apocalyptic number.

21048262 is a deficient number, since it is larger than the sum of its proper divisors (10524134).

21048262 is a wasteful number, since it uses less digits than its factorization.

21048262 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10524133.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 21048262 is about 4587.8384888747. The cubic root of 21048262 is about 276.1036070450.

The spelling of 21048262 in words is "twenty-one million, forty-eight thousand, two hundred sixty-two".