87280129 has 8 divisors (see below), whose sum is σ = 92016000. Its totient is φ = 82558512.

The previous prime is 87280121. The next prime is 87280133. The reversal of 87280129 is 92108278.

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

It is a cyclic number.

It is not a de Polignac number, because 87280129 - 2³ = 87280121 is a prime.

It is a super-3 number, since 3×87280129³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87280121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10467 + ... + 16855.

It is an arithmetic number, because the mean of its divisors is an integer number (11502000).

Almost surely, 2^87280129 is an apocalyptic number.

It is an amenable number.

87280129 is a deficient number, since it is larger than the sum of its proper divisors (4735871).

87280129 is a wasteful number, since it uses less digits than its factorization.

87280129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7127.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 87280129 is about 9342.3834753236. The cubic root of 87280129 is about 443.5798330807.

The spelling of 87280129 in words is "eighty-seven million, two hundred eighty thousand, one hundred twenty-nine".