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16642041 = 3132318553
BaseRepresentation
bin111111011110…
…111111111001
31011022111120220
4333132333321
513230021131
61352410253
7261312033
oct77367771
934274526
1016642041
119437459
1256a6989
1335a8b80
1422d2c53
1516dae96
hexfdeff9

16642041 has 16 divisors (see below), whose sum is σ = 24936576. Its totient is φ = 9795456.

The previous prime is 16642039. The next prime is 16642069. The reversal of 16642041 is 14024661.

It is not a de Polignac number, because 16642041 - 21 = 16642039 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16642001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8380 + ... + 10173.

It is an arithmetic number, because the mean of its divisors is an integer number (1558536).

Almost surely, 216642041 is an apocalyptic number.

It is an amenable number.

16642041 is a deficient number, since it is larger than the sum of its proper divisors (8294535).

16642041 is a wasteful number, since it uses less digits than its factorization.

16642041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18592.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 16642041 is about 4079.4657738483. The cubic root of 16642041 is about 255.3106095816.

The spelling of 16642041 in words is "sixteen million, six hundred forty-two thousand, forty-one".

Divisors: 1 3 13 23 39 69 299 897 18553 55659 241189 426719 723567 1280157 5547347 16642041