87742516 has 24 divisors (see below), whose sum is σ = 165755520. Its totient is φ = 40515552.

The previous prime is 87742481. The next prime is 87742517. The reversal of 87742516 is 61524778.

It is a super-2 number, since 2×87742516² = 15397498228020512, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87742517) 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 in 7 ways as a sum of consecutive naturals, for example, 13776 + ... + 19111.

It is an arithmetic number, because the mean of its divisors is an integer number (6906480).

Almost surely, 2^87742516 is an apocalyptic number.

It is an amenable number.

87742516 is a deficient number, since it is larger than the sum of its proper divisors (78013004).

87742516 is a wasteful number, since it uses less digits than its factorization.

87742516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32943 (or 32941 counting only the distinct ones).

The product of its digits is 94080, while the sum is 40.

The square root of 87742516 is about 9367.0975227121. The cubic root of 87742516 is about 444.3617766708.

The spelling of 87742516 in words is "eighty-seven million, seven hundred forty-two thousand, five hundred sixteen".