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70731932130 = 237517219231
BaseRepresentation
bin100000111011111110…
…0111010000111100010
320202120102121110000000
41001313330322013202
52124324333312010
652254354440430
75052542334366
oct1016774720742
9222512543000
1070731932130
1127aa7371562
121185bb93116
136892c872a2
1435cdd032a6
151c8e9de7c0
hex1077f3a1e2

70731932130 has 576 divisors, whose sum is σ = 220983413760. Its totient is φ = 16275479040.

The previous prime is 70731932107. The next prime is 70731932137. The reversal of 70731932130 is 3123913707.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (70731932137) by changing a digit.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 2281675215 + ... + 2281675245.

It is an arithmetic number, because the mean of its divisors is an integer number (383651760).

Almost surely, 270731932130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70731932130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110491706880).

70731932130 is an abundant number, since it is smaller than the sum of its proper divisors (150251481630).

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

70731932130 is a wasteful number, since it uses less digits than its factorization.

70731932130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131 (or 77 counting only the distinct ones).

The product of its (nonzero) digits is 23814, while the sum is 36.

The spelling of 70731932130 in words is "seventy billion, seven hundred thirty-one million, nine hundred thirty-two thousand, one hundred thirty".