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80138034 = 23217379691
BaseRepresentation
bin1001100011011…
…00111100110010
312120210102201100
410301230330302
5131003404114
611541345230
71662106404
oct461547462
9176712640
1080138034
1141265989
1222a08216
13137ab172
14a900b74
15707e909
hex4c6cf32

80138034 has 48 divisors (see below), whose sum is σ = 184597920. Its totient is φ = 25038720.

The previous prime is 80138033. The next prime is 80138053. The reversal of 80138034 is 43083108.

It is a junction number, because it is equal to n+sod(n) for n = 80137989 and 80138007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80138033) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 115629 + ... + 116319.

It is an arithmetic number, because the mean of its divisors is an integer number (3845790).

Almost surely, 280138034 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80138034, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92298960).

80138034 is an abundant number, since it is smaller than the sum of its proper divisors (104459886).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80138034 is a wasteful number, since it uses less digits than its factorization.

80138034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1095 (or 1092 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 80138034 is about 8951.9849195583. The cubic root of 80138034 is about 431.1346166423.

The spelling of 80138034 in words is "eighty million, one hundred thirty-eight thousand, thirty-four".

Divisors: 1 2 3 6 9 17 18 34 51 102 153 306 379 691 758 1137 1382 2073 2274 3411 4146 6219 6443 6822 11747 12438 12886 19329 23494 35241 38658 57987 70482 105723 115974 211446 261889 523778 785667 1571334 2357001 4452113 4714002 8904226 13356339 26712678 40069017 80138034