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80645102 = 219721039
BaseRepresentation
bin1001100111010…
…00101111101110
312121202012021122
410303220233232
5131121120402
612000300542
71666320626
oct463505756
9177665248
1080645102
114158194a
1223011752
1313927bc5
14a9d3886
15712eca2
hex4ce8bee

80645102 has 12 divisors (see below), whose sum is σ = 121701840. Its totient is φ = 40079256.

The previous prime is 80645083. The next prime is 80645119. The reversal of 80645102 is 20154608.

It is a super-3 number, since 3×806451023 (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 77099 + ... + 78137.

It is an arithmetic number, because the mean of its divisors is an integer number (10141820).

Almost surely, 280645102 is an apocalyptic number.

80645102 is a deficient number, since it is larger than the sum of its proper divisors (41056738).

80645102 is a wasteful number, since it uses less digits than its factorization.

80645102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1435 (or 1238 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 80645102 is about 8980.2618001927. The cubic root of 80645102 is about 432.0420305185.

The spelling of 80645102 in words is "eighty million, six hundred forty-five thousand, one hundred two".

Divisors: 1 2 197 394 1039 2078 38809 77618 204683 409366 40322551 80645102