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13408442 = 247672129
BaseRepresentation
bin110011001001…
…100010111010
3221020012220222
4303021202322
511413032232
61155220042
7221653445
oct63114272
927205828
1013408442
117628a63
1245a7622
132a160b8
141ad065c
15129cd12
hexcc98ba

13408442 has 16 divisors (see below), whose sum is σ = 20856960. Its totient is φ = 6460608.

The previous prime is 13408397. The next prime is 13408463. The reversal of 13408442 is 24480431.

13408442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5234 + ... + 7362.

It is an arithmetic number, because the mean of its divisors is an integer number (1303560).

Almost surely, 213408442 is an apocalyptic number.

13408442 is a deficient number, since it is larger than the sum of its proper divisors (7448518).

13408442 is a wasteful number, since it uses less digits than its factorization.

13408442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2245.

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 13408442 is about 3661.7539513190. The cubic root of 13408442 is about 237.5706426977.

Adding to 13408442 its reverse (24480431), we get a palindrome (37888873).

The spelling of 13408442 in words is "thirteen million, four hundred eight thousand, four hundred forty-two".

Divisors: 1 2 47 67 94 134 2129 3149 4258 6298 100063 142643 200126 285286 6704221 13408442