87758540 has 24 divisors (see below), whose sum is σ = 184479120. Its totient is φ = 35067968.

The previous prime is 87758537. The next prime is 87758563. The reversal of 87758540 is 4585778.

It is a super-3 number, since 3×87758540³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 87758491 and 87758500.

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, 28391 + ... + 31329.

It is an arithmetic number, because the mean of its divisors is an integer number (7686630).

Almost surely, 2^87758540 is an apocalyptic number.

It is an amenable number.

87758540 is an abundant number, since it is smaller than the sum of its proper divisors (96720580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87758540 is a wasteful number, since it uses less digits than its factorization.

87758540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4441 (or 4439 counting only the distinct ones).

The product of its (nonzero) digits is 313600, while the sum is 44.

The square root of 87758540 is about 9367.9528179854. The cubic root of 87758540 is about 444.3888255863.

The spelling of 87758540 in words is "eighty-seven million, seven hundred fifty-eight thousand, five hundred forty".