87451344 has 30 divisors (see below), whose sum is σ = 244742706. Its totient is φ = 29150400.

The previous prime is 87451337. The next prime is 87451361. The reversal of 87451344 is 44315478.

It can be written as a sum of positive squares in only one way, i.e., 47610000 + 39841344 = 6900^2 + 6312^2 .

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 = 87451299 and 87451308.

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 5 ways as a sum of consecutive naturals, for example, 303507 + ... + 303794.

Almost surely, 2^87451344 is an apocalyptic number.

It is an amenable number.

87451344 is an abundant number, since it is smaller than the sum of its proper divisors (157291362).

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

87451344 is a wasteful number, since it uses less digits than its factorization.

87451344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607315 (or 607306 counting only the distinct ones).

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

The square root of 87451344 is about 9351.5423326850. The cubic root of 87451344 is about 443.8696963621.

The spelling of 87451344 in words is "eighty-seven million, four hundred fifty-one thousand, three hundred forty-four".