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72473 = 232137
BaseRepresentation
bin10001101100011001
310200102012
4101230121
54304343
61315305
7421202
oct215431
9120365
1072473
114a4a5
1235b35
1326cab
141c5a9
1516718
hex11b19

72473 has 6 divisors (see below), whose sum is σ = 76314. Its totient is φ = 68816.

The previous prime is 72469. The next prime is 72481. The reversal of 72473 is 37427.

It can be divided in two parts, 724 and 73, that added together give a palindrome (797).

It can be written as a sum of positive squares in only one way, i.e., 64009 + 8464 = 253^2 + 92^2 .

It is not a de Polignac number, because 72473 - 22 = 72469 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72493) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 461 + ... + 597.

It is an arithmetic number, because the mean of its divisors is an integer number (12719).

272473 is an apocalyptic number.

It is an amenable number.

72473 is a deficient number, since it is larger than the sum of its proper divisors (3841).

72473 is a wasteful number, since it uses less digits than its factorization.

72473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183 (or 160 counting only the distinct ones).

The product of its digits is 1176, while the sum is 23.

The square root of 72473 is about 269.2080979466. The cubic root of 72473 is about 41.6925776613.

The spelling of 72473 in words is "seventy-two thousand, four hundred seventy-three", and thus it is an iban number.

Divisors: 1 23 137 529 3151 72473