87778016 has 24 divisors (see below), whose sum is σ = 174600720. Its totient is φ = 43435008.

The previous prime is 87778003. The next prime is 87778049. The reversal of 87778016 is 61087778.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 11036 + ... + 17243.

It is an arithmetic number, because the mean of its divisors is an integer number (7275030).

Almost surely, 2^87778016 is an apocalyptic number.

It is an amenable number.

87778016 is a deficient number, since it is larger than the sum of its proper divisors (86822704).

87778016 is a wasteful number, since it uses less digits than its factorization.

87778016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28386 (or 28378 counting only the distinct ones).

The product of its (nonzero) digits is 131712, while the sum is 44.

The square root of 87778016 is about 9368.9922617110. The cubic root of 87778016 is about 444.4216971321.

The spelling of 87778016 in words is "eighty-seven million, seven hundred seventy-eight thousand, sixteen".