21464048 has 20 divisors (see below), whose sum is σ = 41749560. Its totient is φ = 10689984.

The previous prime is 21464029. The next prime is 21464057. The reversal of 21464048 is 84046412.

It is a self number, because there is not a number n which added to its sum of digits gives 21464048.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1811 + ... + 6797.

It is an arithmetic number, because the mean of its divisors is an integer number (2087478).

Almost surely, 2^21464048 is an apocalyptic number.

It is an amenable number.

21464048 is a deficient number, since it is larger than the sum of its proper divisors (20285512).

21464048 is a wasteful number, since it uses less digits than its factorization.

21464048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5264 (or 5258 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 29.

The square root of 21464048 is about 4632.9308218449. The cubic root of 21464048 is about 277.9098097784.

It can be divided in two parts, 2146404 and 8, that added together give a palindrome (2146412).

The spelling of 21464048 in words is "twenty-one million, four hundred sixty-four thousand, forty-eight".