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78132230924 = 221147199373509
BaseRepresentation
bin100100011000100001…
…0110011101100001100
321110200011120120111112
41020301002303230030
52240003322342144
655520552511152
75434122001466
oct1106102635414
9243604516445
1078132230924
1130154675580
12131863ab4b8
1374a21a7807
143ad2aa1136
15207452a99e
hex12310b3b0c

78132230924 has 96 divisors (see below), whose sum is σ = 153812736000. Its totient is φ = 34423868160.

The previous prime is 78132230893. The next prime is 78132230941. The reversal of 78132230924 is 42903223187.

It is a super-2 number, since 2×781322309242 (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 153501182 + ... + 153501690.

It is an arithmetic number, because the mean of its divisors is an integer number (1602216000).

Almost surely, 278132230924 is an apocalyptic number.

It is an amenable number.

78132230924 is a deficient number, since it is larger than the sum of its proper divisors (75680505076).

78132230924 is a wasteful number, since it uses less digits than its factorization.

78132230924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1143 (or 1141 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 41.

The spelling of 78132230924 in words is "seventy-eight billion, one hundred thirty-two million, two hundred thirty thousand, nine hundred twenty-four".

Divisors: 1 2 4 11 22 44 47 94 188 199 373 398 509 517 746 796 1018 1034 1492 2036 2068 2189 4103 4378 5599 8206 8756 9353 11198 16412 17531 18706 22396 23923 35062 37412 47846 70124 74227 95692 101291 102883 148454 189857 192841 202582 205766 263153 296908 379714 385682 405164 411532 526306 759428 771364 816497 1052612 1114201 1632994 2088427 2228402 3265988 3488669 4176854 4456804 4760677 6977338 8353708 8923279 9521354 13954676 17846558 19042708 35693116 37781543 38375359 52367447 75563086 76750718 98156069 104734894 151126172 153501436 196312138 209469788 392624276 415596973 831193946 1662387892 1775732521 3551465042 7102930084 19533057731 39066115462 78132230924