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87614740 = 2254380737
BaseRepresentation
bin1010011100011…
…10010100010100
320002212021211101
411032032110110
5134412132430
612405515444
72112466363
oct516162424
9202767741
1087614740
1145502284
1225412b84
13151c8355
14b8c97da
157a59dca
hex538e514

87614740 has 12 divisors (see below), whose sum is σ = 183990996. Its totient is φ = 35045888.

The previous prime is 87614701. The next prime is 87614741. The reversal of 87614740 is 4741678.

It can be written as a sum of positive squares in 2 ways, for example, as 62031376 + 25583364 = 7876^2 + 5058^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 87614740.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87614741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2190349 + ... + 2190388.

It is an arithmetic number, because the mean of its divisors is an integer number (15332583).

Almost surely, 287614740 is an apocalyptic number.

It is an amenable number.

87614740 is an abundant number, since it is smaller than the sum of its proper divisors (96376256).

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

87614740 is a wasteful number, since it uses less digits than its factorization.

87614740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4380746 (or 4380744 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 37.

The square root of 87614740 is about 9360.2745686224. The cubic root of 87614740 is about 444.1459696450.

The spelling of 87614740 in words is "eighty-seven million, six hundred fourteen thousand, seven hundred forty".

Divisors: 1 2 4 5 10 20 4380737 8761474 17522948 21903685 43807370 87614740