87148540 has 24 divisors (see below), whose sum is σ = 183238272. Its totient is φ = 34816320.

The previous prime is 87148531. The next prime is 87148553. The reversal of 87148540 is 4584178.

It is a self number, because there is not a number n which added to its sum of digits gives 87148540.

It is a congruent number.

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, 17622 + ... + 22018.

It is an arithmetic number, because the mean of its divisors is an integer number (7634928).

Almost surely, 2^87148540 is an apocalyptic number.

It is an amenable number.

87148540 is an abundant number, since it is smaller than the sum of its proper divisors (96089732).

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

87148540 is a wasteful number, since it uses less digits than its factorization.

87148540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5397 (or 5395 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 37.

The square root of 87148540 is about 9335.3382370432. The cubic root of 87148540 is about 443.3567980244.

The spelling of 87148540 in words is "eighty-seven million, one hundred forty-eight thousand, five hundred forty".