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80613884 = 221319139587
BaseRepresentation
bin1001100111000…
…01000111111100
312121200121110102
410303201013330
5131114121014
611555500232
71666130621
oct463410774
9177617412
1080613884
114156044a
1222bb7678
1313916930
14a9c6348
1571258de
hex4ce11fc

80613884 has 48 divisors (see below), whose sum is σ = 161347200. Its totient is φ = 34934976.

The previous prime is 80613839. The next prime is 80613889. The reversal of 80613884 is 48831608.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80613889) 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, 137039 + ... + 137625.

It is an arithmetic number, because the mean of its divisors is an integer number (3361400).

Almost surely, 280613884 is an apocalyptic number.

It is an amenable number.

80613884 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

80613884 is a wasteful number, since it uses less digits than its factorization.

80613884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762 (or 760 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 80613884 is about 8978.5234866319. The cubic root of 80613884 is about 431.9862749983.

The spelling of 80613884 in words is "eighty million, six hundred thirteen thousand, eight hundred eighty-four".

Divisors: 1 2 4 13 19 26 38 52 76 139 247 278 494 556 587 988 1174 1807 2348 2641 3614 5282 7228 7631 10564 11153 15262 22306 30524 34333 44612 68666 81593 137332 144989 163186 289978 326372 579956 1060709 1550267 2121418 3100534 4242836 6201068 20153471 40306942 80613884