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21484952 = 231393
BaseRepresentation
bin101000111110…
…1010110011000
31111102112210222
41101331112120
521000004302
62044255212
7350422226
oct121752630
944375728
1021484952
1111144a65
127241508
1345b32b8
142bd3b16
151d45da2
hex147d598

21484952 has 16 divisors (see below), whose sum is σ = 40576200. Its totient is φ = 10665192.

The previous prime is 21484937. The next prime is 21484973. The reversal of 21484952 is 25948412.

The cubic root of 21484952 is 278.

It is a perfect power (a cube), and thus also a powerful number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154499 + ... + 154637.

Almost surely, 221484952 is an apocalyptic number.

It is an amenable number.

21484952 is a deficient number, since it is larger than the sum of its proper divisors (19091248).

21484952 is an frugal number, since it uses more digits than its factorization.

21484952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423 (or 141 counting only the distinct ones).

The product of its digits is 23040, while the sum is 35.

The square root of 21484952 is about 4635.1862961482.

The spelling of 21484952 in words is "twenty-one million, four hundred eighty-four thousand, nine hundred fifty-two".

Divisors: 1 2 4 8 139 278 556 1112 19321 38642 77284 154568 2685619 5371238 10742476 21484952