87128614 has 4 divisors (see below), whose sum is σ = 130692924. Its totient is φ = 43564306.

The previous prime is 87128611. The next prime is 87128617. The reversal of 87128614 is 41682178.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 41682178 = 2 ⋅20841089.

It is an interprime number because it is at equal distance from previous prime (87128611) and next prime (87128617).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87128611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21782152 + ... + 21782155.

It is an arithmetic number, because the mean of its divisors is an integer number (32673231).

Almost surely, 2^87128614 is an apocalyptic number.

87128614 is a deficient number, since it is larger than the sum of its proper divisors (43564310).

87128614 is a wasteful number, since it uses less digits than its factorization.

87128614 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43564309.

The product of its digits is 21504, while the sum is 37.

The square root of 87128614 is about 9334.2709410002. The cubic root of 87128614 is about 443.3230051425.

The spelling of 87128614 in words is "eighty-seven million, one hundred twenty-eight thousand, six hundred fourteen".