87283540 has 12 divisors (see below), whose sum is σ = 183295476. Its totient is φ = 34913408.

The previous prime is 87283529. The next prime is 87283541. The reversal of 87283540 is 4538278.

It can be written as a sum of positive squares in 2 ways, for example, as 69288976 + 17994564 = 8324^2 + 4242^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 87283540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87283541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2182069 + ... + 2182108.

It is an arithmetic number, because the mean of its divisors is an integer number (15274623).

Almost surely, 2^87283540 is an apocalyptic number.

It is an amenable number.

87283540 is an abundant number, since it is smaller than the sum of its proper divisors (96011936).

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

87283540 is a wasteful number, since it uses less digits than its factorization.

87283540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4364186 (or 4364184 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 87283540 is about 9342.5660286669. The cubic root of 87283540 is about 443.5856115288.

The spelling of 87283540 in words is "eighty-seven million, two hundred eighty-three thousand, five hundred forty".