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472388 = 22716871
BaseRepresentation
bin1110011010101000100
3212222222212
41303111010
5110104023
614042552
74005140
oct1632504
9788885
10472388
112a2a04
121a9458
13137027
14c4220
1594e78
hex73544

472388 has 12 divisors (see below), whose sum is σ = 944832. Its totient is φ = 202440.

The previous prime is 472369. The next prime is 472391. The reversal of 472388 is 883274.

472388 is nontrivially palindromic in base 3.

472388 is an admirable number.

It is a super-4 number, since 4×4723884 (a number of 24 digits) contains 4444 as substring.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a nialpdrome in base 14.

It is an unprimeable number.

472388 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8408 + ... + 8463.

It is an arithmetic number, because the mean of its divisors is an integer number (78736).

472388 is a Friedman number, since it can be written as 8*3^8*(7+2)-4, using all its digits and the basic arithmetic operations.

2472388 is an apocalyptic number.

It is an amenable number.

472388 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

472388 is a wasteful number, since it uses less digits than its factorization.

472388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16882 (or 16880 counting only the distinct ones).

The product of its digits is 10752, while the sum is 32.

The square root of 472388 is about 687.3048814027. The cubic root of 472388 is about 77.8812569744.

The spelling of 472388 in words is "four hundred seventy-two thousand, three hundred eighty-eight".

Divisors: 1 2 4 7 14 28 16871 33742 67484 118097 236194 472388