21048414 has 32 divisors (see below), whose sum is σ = 45619200. Its totient is φ = 6448512.

The previous prime is 21048413. The next prime is 21048421. The reversal of 21048414 is 41484012.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21048413) 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 in 15 ways as a sum of consecutive naturals, for example, 1987 + ... + 6785.

It is an arithmetic number, because the mean of its divisors is an integer number (1425600).

Almost surely, 2^21048414 is an apocalyptic number.

21048414 is an abundant number, since it is smaller than the sum of its proper divisors (24570786).

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

21048414 is a wasteful number, since it uses less digits than its factorization.

21048414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4864.

The product of its (nonzero) digits is 1024, while the sum is 24.

The square root of 21048414 is about 4587.8550543800. The cubic root of 21048414 is about 276.1042716707.

The spelling of 21048414 in words is "twenty-one million, forty-eight thousand, four hundred fourteen".