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78233141 = 753433487
BaseRepresentation
bin1001010100110…
…11111000110101
312110012122200202
410222123320311
5130011430031
611432450245
71636653650
oct452337065
9173178622
1078233141
1140184798
1222249985
13132920cc
14a566897
156d052cb
hex4a9be35

78233141 has 16 divisors (see below), whose sum is σ = 91494144. Its totient is φ = 65505024.

The previous prime is 78233107. The next prime is 78233159. The reversal of 78233141 is 14133287.

It is a cyclic number.

It is not a de Polignac number, because 78233141 - 210 = 78232117 is a prime.

It is a super-2 number, since 2×782331412 = 12240848701451762, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78233161) 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, 160400 + ... + 160886.

It is an arithmetic number, because the mean of its divisors is an integer number (5718384).

Almost surely, 278233141 is an apocalyptic number.

It is an amenable number.

78233141 is a deficient number, since it is larger than the sum of its proper divisors (13261003).

78233141 is a wasteful number, since it uses less digits than its factorization.

78233141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 980.

The product of its digits is 4032, while the sum is 29.

The square root of 78233141 is about 8844.9500281234. The cubic root of 78233141 is about 427.6911421387.

The spelling of 78233141 in words is "seventy-eight million, two hundred thirty-three thousand, one hundred forty-one".

Divisors: 1 7 53 371 433 487 3031 3409 22949 25811 160643 180677 210871 1476097 11176163 78233141