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68973180 = 22353731069
BaseRepresentation
bin1000001110001…
…11001001111100
311210210012102020
410013013021330
5120124120210
610502200140
71465155663
oct407071174
9153705366
1068973180
1135a2a631
121b123050
131139c343
149235dda
1560c6770
hex41c727c

68973180 has 48 divisors (see below), whose sum is σ = 198350880. Its totient is φ = 17895168.

The previous prime is 68973167. The next prime is 68973187. The reversal of 68973180 is 8137986.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68973187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13315 + ... + 17754.

It is an arithmetic number, because the mean of its divisors is an integer number (4132310).

Almost surely, 268973180 is an apocalyptic number.

68973180 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68973180 is an abundant number, since it is smaller than the sum of its proper divisors (129377700).

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

68973180 is a wasteful number, since it uses less digits than its factorization.

68973180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31118 (or 31116 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 68973180 is about 8305.0093317226. The cubic root of 68973180 is about 410.1034440553.

The spelling of 68973180 in words is "sixty-eight million, nine hundred seventy-three thousand, one hundred eighty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 37 60 74 111 148 185 222 370 444 555 740 1110 2220 31069 62138 93207 124276 155345 186414 310690 372828 466035 621380 932070 1149553 1864140 2299106 3448659 4598212 5747765 6897318 11495530 13794636 17243295 22991060 34486590 68973180