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87748968 = 23317449479
BaseRepresentation
bin1010011101011…
…11000101101000
320010010002221210
411032233011220
5134430431333
612412433120
72113565616
oct516570550
9203102853
1087748968
114559410a
12254787a0
1315244488
14b9226b6
157a84a63
hex53af168

87748968 has 64 divisors (see below), whose sum is σ = 233280000. Its totient is φ = 27410432.

The previous prime is 87748949. The next prime is 87749009. The reversal of 87748968 is 86984778.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182953 + ... + 183431.

It is an arithmetic number, because the mean of its divisors is an integer number (3645000).

Almost surely, 287748968 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 87748968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116640000).

87748968 is an abundant number, since it is smaller than the sum of its proper divisors (145531032).

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

87748968 is a wasteful number, since it uses less digits than its factorization.

87748968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954 (or 950 counting only the distinct ones).

The product of its digits is 5419008, while the sum is 57.

The square root of 87748968 is about 9367.4419133507. The cubic root of 87748968 is about 444.3726682053.

The spelling of 87748968 in words is "eighty-seven million, seven hundred forty-eight thousand, nine hundred sixty-eight".

Divisors: 1 2 3 4 6 8 12 17 24 34 51 68 102 136 204 408 449 479 898 958 1347 1437 1796 1916 2694 2874 3592 3832 5388 5748 7633 8143 10776 11496 15266 16286 22899 24429 30532 32572 45798 48858 61064 65144 91596 97716 183192 195432 215071 430142 645213 860284 1290426 1720568 2580852 3656207 5161704 7312414 10968621 14624828 21937242 29249656 43874484 87748968