87426540 has 72 divisors (see below), whose sum is σ = 275031120. Its totient is φ = 23312448.

The previous prime is 87426527. The next prime is 87426551. The reversal of 87426540 is 4562478.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 87426495 and 87426504.

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 23 ways as a sum of consecutive naturals, for example, 4135 + ... + 13854.

Almost surely, 2^87426540 is an apocalyptic number.

It is an amenable number.

87426540 is an abundant number, since it is smaller than the sum of its proper divisors (187604580).

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

87426540 is a wasteful number, since it uses less digits than its factorization.

87426540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18013 (or 17999 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 87426540 is about 9350.2160402848. The cubic root of 87426540 is about 443.8277271767.

The spelling of 87426540 in words is "eighty-seven million, four hundred twenty-six thousand, five hundred forty".