21484041 has 32 divisors (see below), whose sum is σ = 32054400. Its totient is φ = 12741120.

The previous prime is 21484033. The next prime is 21484061. The reversal of 21484041 is 14048412.

21484041 = 266² + 267² + ... + 436².

It is not a de Polignac number, because 21484041 - 2³ = 21484033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21484031) 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 31 ways as a sum of consecutive naturals, for example, 67615 + ... + 67931.

It is an arithmetic number, because the mean of its divisors is an integer number (1001700).

Almost surely, 2^21484041 is an apocalyptic number.

It is an amenable number.

21484041 is a deficient number, since it is larger than the sum of its proper divisors (10570359).

21484041 is a wasteful number, since it uses less digits than its factorization.

21484041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409.

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

The square root of 21484041 is about 4635.0880250541. The cubic root of 21484041 is about 277.9960707137.

It can be divided in two parts, 214 and 84041, that added together give a triangular number (84255 = T₄₁₀).

The spelling of 21484041 in words is "twenty-one million, four hundred eighty-four thousand, forty-one".