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87495930 = 2335541599
BaseRepresentation
bin1010011011100…
…01010011111010
320002122020212000
411031301103322
5134344332210
612403201430
72111463114
oct515612372
9202566760
1087495930
1145430a95
1225376276
1315186252
14b8983b4
157a34ac0
hex53714fa

87495930 has 64 divisors (see below), whose sum is σ = 234144000. Its totient is φ = 23250240.

The previous prime is 87495911. The next prime is 87495937. The reversal of 87495930 is 3959478.

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

It is not an unprimeable number, because it can be changed into a prime (87495937) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 145771 + ... + 146369.

It is an arithmetic number, because the mean of its divisors is an integer number (3658500).

Almost surely, 287495930 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87495930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117072000).

87495930 is an abundant number, since it is smaller than the sum of its proper divisors (146648070).

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

87495930 is a wasteful number, since it uses less digits than its factorization.

87495930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1156 (or 1150 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 87495930 is about 9353.9259137541. The cubic root of 87495930 is about 443.9451173945.

The spelling of 87495930 in words is "eighty-seven million, four hundred ninety-five thousand, nine hundred thirty".

Divisors: 1 2 3 5 6 9 10 15 18 27 30 45 54 90 135 270 541 599 1082 1198 1623 1797 2705 2995 3246 3594 4869 5391 5410 5990 8115 8985 9738 10782 14607 16173 16230 17970 24345 26955 29214 32346 48690 53910 73035 80865 146070 161730 324059 648118 972177 1620295 1944354 2916531 3240590 4860885 5833062 8749593 9721770 14582655 17499186 29165310 43747965 87495930