21654048 has 48 divisors (see below), whose sum is σ = 61217856. Its totient is φ = 6662400.

The previous prime is 21654041. The next prime is 21654067. The reversal of 21654048 is 84045612.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21654041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7428 + ... + 9923.

It is an arithmetic number, because the mean of its divisors is an integer number (1275372).

Almost surely, 2^21654048 is an apocalyptic number.

It is an amenable number.

21654048 is an abundant number, since it is smaller than the sum of its proper divisors (39563808).

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

21654048 is a wasteful number, since it uses less digits than its factorization.

21654048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17377 (or 17369 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 21654048 is about 4653.3910216099. The cubic root of 21654048 is about 278.7274222767.

The spelling of 21654048 in words is "twenty-one million, six hundred fifty-four thousand, forty-eight".