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80930997 = 32722379101
BaseRepresentation
bin1001101001011…
…10100010110101
312122021201110100
410310232202311
5131204242442
612010344313
72001621300
oct464564265
9178251410
1080930997
1141757724
122312b099
13139c8084
14aa69b37
15718984c
hex4d2e8b5

80930997 has 72 divisors (see below), whose sum is σ = 145117440. Its totient is φ = 43243200.

The previous prime is 80930981. The next prime is 80931001. The reversal of 80930997 is 79903908.

It is a happy number.

It is not a de Polignac number, because 80930997 - 24 = 80930981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80930917) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 801247 + ... + 801347.

It is an arithmetic number, because the mean of its divisors is an integer number (2015520).

Almost surely, 280930997 is an apocalyptic number.

It is an amenable number.

80930997 is a deficient number, since it is larger than the sum of its proper divisors (64186443).

80930997 is a wasteful number, since it uses less digits than its factorization.

80930997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223 (or 213 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 80930997 is about 8996.1656832230. The cubic root of 80930997 is about 432.5519725486.

The spelling of 80930997 in words is "eighty million, nine hundred thirty thousand, nine hundred ninety-seven".

Divisors: 1 3 7 9 21 23 49 63 69 79 101 147 161 207 237 303 441 483 553 707 711 909 1127 1449 1659 1817 2121 2323 3381 3871 4949 4977 5451 6363 6969 7979 10143 11613 12719 14847 16261 16353 20907 23937 34839 38157 44541 48783 55853 71811 89033 113827 114471 146349 167559 183517 267099 341481 390971 502677 550551 801297 1024443 1172913 1284619 1651653 3518739 3853857 8992333 11561571 26976999 80930997