21460512 has 24 divisors (see below), whose sum is σ = 56334096. Its totient is φ = 7153472.

The previous prime is 21460501. The next prime is 21460547. The reversal of 21460512 is 21506412.

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 111678 + ... + 111869.

It is an arithmetic number, because the mean of its divisors is an integer number (2347254).

Almost surely, 2^21460512 is an apocalyptic number.

It is an amenable number.

21460512 is an abundant number, since it is smaller than the sum of its proper divisors (34873584).

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

21460512 is a wasteful number, since it uses less digits than its factorization.

21460512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223560 (or 223552 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 21460512 is about 4632.5491902407. The cubic root of 21460512 is about 277.8945479313.

Adding to 21460512 its reverse (21506412), we get a palindrome (42966924).

It can be divided in two parts, 214 and 60512, that added together give a triangular number (60726 = T₃₄₈).

The spelling of 21460512 in words is "twenty-one million, four hundred sixty thousand, five hundred twelve".