87129034 has 16 divisors (see below), whose sum is σ = 135783936. Its totient is φ = 41886000.

The previous prime is 87129019. The next prime is 87129047. The reversal of 87129034 is 43092178.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5259 + ... + 14209.

It is an arithmetic number, because the mean of its divisors is an integer number (8486496).

Almost surely, 2^87129034 is an apocalyptic number.

87129034 is a deficient number, since it is larger than the sum of its proper divisors (48654902).

87129034 is a wasteful number, since it uses less digits than its factorization.

87129034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9141.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 87129034 is about 9334.2934387130. The cubic root of 87129034 is about 443.3237174817.

The spelling of 87129034 in words is "eighty-seven million, one hundred twenty-nine thousand, thirty-four".