21484467 has 16 divisors (see below), whose sum is σ = 32215680. Its totient is φ = 14148936.

The previous prime is 21484453. The next prime is 21484469. The reversal of 21484467 is 76448412.

It is not a de Polignac number, because 21484467 - 2⁶ = 21484403 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21484469) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2553 + ... + 7034.

It is an arithmetic number, because the mean of its divisors is an integer number (2013480).

Almost surely, 2^21484467 is an apocalyptic number.

21484467 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

21484467 is a deficient number, since it is larger than the sum of its proper divisors (10731213).

21484467 is an equidigital number, since it uses as much as digits as its factorization.

21484467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9679 (or 9673 counting only the distinct ones).

The product of its digits is 43008, while the sum is 36.

The square root of 21484467 is about 4635.1339786461. The cubic root of 21484467 is about 277.9979081326.

It can be divided in two parts, 214 and 84467, that added together give a square (84681 = 291²).

The spelling of 21484467 in words is "twenty-one million, four hundred eighty-four thousand, four hundred sixty-seven".