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13437423 = 321917817
BaseRepresentation
bin110011010000…
…100111101111
3221021200200100
4303100213233
511414444143
61200002143
7222134106
oct63204757
927250610
1013437423
11764880a
124600353
132a2634c
141adb03d
1512a66d3
hexcd09ef

13437423 has 12 divisors (see below), whose sum is σ = 19513728. Its totient is φ = 8910240.

The previous prime is 13437421. The next prime is 13437449. The reversal of 13437423 is 32473431.

It is not a de Polignac number, because 13437423 - 21 = 13437421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13437421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2190 + ... + 5627.

It is an arithmetic number, because the mean of its divisors is an integer number (1626144).

Almost surely, 213437423 is an apocalyptic number.

13437423 is a deficient number, since it is larger than the sum of its proper divisors (6076305).

13437423 is a wasteful number, since it uses less digits than its factorization.

13437423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8014 (or 8011 counting only the distinct ones).

The product of its digits is 6048, while the sum is 27.

The square root of 13437423 is about 3665.7090719259. The cubic root of 13437423 is about 237.7416812197.

The spelling of 13437423 in words is "thirteen million, four hundred thirty-seven thousand, four hundred twenty-three".

Divisors: 1 3 9 191 573 1719 7817 23451 70353 1493047 4479141 13437423