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87878067 = 356951481
BaseRepresentation
bin1010011110011…
…10100110110011
320010100200001020
411033032212303
5134444044232
612415310523
72114644164
oct517164663
9203320036
1087878067
1145672102
122551b443
131528b174
14b95776b
157aace2c
hex53ce9b3

87878067 has 8 divisors (see below), whose sum is σ = 117378960. Its totient is φ = 58481280.

The previous prime is 87878053. The next prime is 87878069. The reversal of 87878067 is 76087878.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 87878067 - 24 = 87878051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87878069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24034 + ... + 27447.

It is an arithmetic number, because the mean of its divisors is an integer number (14672370).

Almost surely, 287878067 is an apocalyptic number.

87878067 is a deficient number, since it is larger than the sum of its proper divisors (29500893).

87878067 is a wasteful number, since it uses less digits than its factorization.

87878067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52053.

The product of its (nonzero) digits is 1053696, while the sum is 51.

The square root of 87878067 is about 9374.3302160741. The cubic root of 87878067 is about 444.5904863650.

The spelling of 87878067 in words is "eighty-seven million, eight hundred seventy-eight thousand, sixty-seven".

Divisors: 1 3 569 1707 51481 154443 29292689 87878067