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130378878 = 23272334441
BaseRepresentation
bin1111100010101…
…10110001111110
3100002022221012100
413301112301332
5231334111003
620534245530
73142126230
oct761266176
9302287170
10130378878
1167660643
12377b68a6
132101c086
141345c250
15b6a5ba3
hex7c56c7e

130378878 has 48 divisors (see below), whose sum is σ = 324301536. Its totient is φ = 37082880.

The previous prime is 130378877. The next prime is 130378883. The reversal of 130378878 is 878873031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130378877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27138 + ... + 31578.

It is an arithmetic number, because the mean of its divisors is an integer number (6756282).

Almost surely, 2130378878 is an apocalyptic number.

130378878 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 130378878, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162150768).

130378878 is an abundant number, since it is smaller than the sum of its proper divisors (193922658).

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

130378878 is a wasteful number, since it uses less digits than its factorization.

130378878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4689 (or 4686 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The square root of 130378878 is about 11418.3570622047. The cubic root of 130378878 is about 507.0713576722.

The spelling of 130378878 in words is "one hundred thirty million, three hundred seventy-eight thousand, eight hundred seventy-eight".

Divisors: 1 2 3 6 7 9 14 18 21 42 63 126 233 466 699 1398 1631 2097 3262 4194 4441 4893 8882 9786 13323 14679 26646 29358 31087 39969 62174 79938 93261 186522 279783 559566 1034753 2069506 3104259 6208518 7243271 9312777 14486542 18625554 21729813 43459626 65189439 130378878