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45731286680 = 23529167236069
BaseRepresentation
bin101010100101110011…
…000000111010011000
311101001002111001210112
4222211303000322120
51222124202133210
633001512103452
73206156344262
oct524563007230
9141032431715
1045731286680
1118438134602
128a43394b88
13440a586061
1422db82cb32
1512c9c40d05
hexaa5cc0e98

45731286680 has 64 divisors (see below), whose sum is σ = 107081352000. Its totient is φ = 17555905024.

The previous prime is 45731286589. The next prime is 45731286691. The reversal of 45731286680 is 8668213754.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75686 + ... + 311754.

It is an arithmetic number, because the mean of its divisors is an integer number (1673146125).

Almost surely, 245731286680 is an apocalyptic number.

45731286680 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45731286680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53540676000).

45731286680 is an abundant number, since it is smaller than the sum of its proper divisors (61350065320).

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

45731286680 is a wasteful number, since it uses less digits than its factorization.

45731286680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236276 (or 236272 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 50.

The spelling of 45731286680 in words is "forty-five billion, seven hundred thirty-one million, two hundred eighty-six thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 20 29 40 58 116 145 167 232 290 334 580 668 835 1160 1336 1670 3340 4843 6680 9686 19372 24215 38744 48430 96860 193720 236069 472138 944276 1180345 1888552 2360690 4721380 6846001 9442760 13692002 27384004 34230005 39423523 54768008 68460010 78847046 136920020 157694092 197117615 273840040 315388184 394235230 788470460 1143282167 1576940920 2286564334 4573128668 5716410835 9146257336 11432821670 22865643340 45731286680