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78288001470 = 23357192114743
BaseRepresentation
bin100100011101001010…
…1000001100110111110
321111002000200112112000
41020322111001212332
52240313212021340
655544235323130
75441023014150
oct1107225014676
9244060615460
1078288001470
1130224599268
121320a5b04a6
1374c8547133
143b0964cad0
152083049d30
hex123a5419be

78288001470 has 192 divisors, whose sum is σ = 251812592640. Its totient is φ = 16952442048.

The previous prime is 78288001417. The next prime is 78288001499. The reversal of 78288001470 is 7410088287.

It is a super-2 number, since 2×782880014702 (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 624919 + ... + 739661.

It is an arithmetic number, because the mean of its divisors is an integer number (1311523920).

Almost surely, 278288001470 is an apocalyptic number.

78288001470 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 78288001470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125906296320).

78288001470 is an abundant number, since it is smaller than the sum of its proper divisors (173524591170).

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

78288001470 is a wasteful number, since it uses less digits than its factorization.

78288001470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114804 (or 114779 counting only the distinct ones).

The product of its (nonzero) digits is 200704, while the sum is 45.

The spelling of 78288001470 in words is "seventy-eight billion, two hundred eighty-eight million, one thousand, four hundred seventy".