Search a number
-
+
87713582040 = 23325788339419
BaseRepresentation
bin101000110110000100…
…0110000101111011000
322101101220120122022200
41101230020300233120
52414114134111130
6104143422250200
76223424100660
oct1215410605730
9271356518280
1087713582040
1134221037477
1214bbb126960
13836b224246
1443613a71a0
15243578e760
hex146c230bd8

87713582040 has 192 divisors, whose sum is σ = 326170540800. Its totient is φ = 20025605376.

The previous prime is 87713582017. The next prime is 87713582057. The reversal of 87713582040 is 4028531778.

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 47 ways as a sum of consecutive naturals, for example, 2205451 + ... + 2244869.

It is an arithmetic number, because the mean of its divisors is an integer number (1698804900).

Almost surely, 287713582040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87713582040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163085270400).

87713582040 is an abundant number, since it is smaller than the sum of its proper divisors (238456958760).

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

87713582040 is a wasteful number, since it uses less digits than its factorization.

87713582040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40326 (or 40319 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The spelling of 87713582040 in words is "eighty-seven billion, seven hundred thirteen million, five hundred eighty-two thousand, forty".