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87040541 = 7791071471
BaseRepresentation
bin1010011000000…
…10001000011101
320001210010011202
411030002020131
5134240244131
612345325245
72104555340
oct514021035
9201703152
1087040541
114514a935
1225196825
1315056ba3
14b7ba457
157994bcb
hex530221d

87040541 has 16 divisors (see below), whose sum is σ = 101744640. Its totient is φ = 72923760.

The previous prime is 87040537. The next prime is 87040543. The reversal of 87040541 is 14504078.

It is not a de Polignac number, because 87040541 - 22 = 87040537 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87040543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58436 + ... + 59906.

It is an arithmetic number, because the mean of its divisors is an integer number (6359040).

Almost surely, 287040541 is an apocalyptic number.

It is an amenable number.

87040541 is a deficient number, since it is larger than the sum of its proper divisors (14704099).

87040541 is a wasteful number, since it uses less digits than its factorization.

87040541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1664.

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 87040541 is about 9329.5520256870. The cubic root of 87040541 is about 443.1735787232.

The spelling of 87040541 in words is "eighty-seven million, forty thousand, five hundred forty-one".

Divisors: 1 7 79 107 553 749 1471 8453 10297 59171 116209 157397 813463 1101779 12434363 87040541