87129430 has 24 divisors (see below), whose sum is σ = 159599952. Its totient is φ = 34247376.

The previous prime is 87129409. The next prime is 87129431. The reversal of 87129430 is 3492178.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87129431) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33559 + ... + 36061.

It is an arithmetic number, because the mean of its divisors is an integer number (6649998).

Almost surely, 2^87129430 is an apocalyptic number.

87129430 is a deficient number, since it is larger than the sum of its proper divisors (72470522).

87129430 is a wasteful number, since it uses less digits than its factorization.

87129430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2628 (or 2569 counting only the distinct ones).

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

The square root of 87129430 is about 9334.3146507925. The cubic root of 87129430 is about 443.3243891136.

The spelling of 87129430 in words is "eighty-seven million, one hundred twenty-nine thousand, four hundred thirty".