87407140 has 12 divisors (see below), whose sum is σ = 183555036. Its totient is φ = 34962848.

The previous prime is 87407137. The next prime is 87407161. The reversal of 87407140 is 4170478.

It can be written as a sum of positive squares in 2 ways, for example, as 23503104 + 63904036 = 4848^2 + 7994^2 .

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 3 ways as a sum of consecutive naturals, for example, 2185159 + ... + 2185198.

It is an arithmetic number, because the mean of its divisors is an integer number (15296253).

Almost surely, 2^87407140 is an apocalyptic number.

It is an amenable number.

87407140 is an abundant number, since it is smaller than the sum of its proper divisors (96147896).

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

87407140 is a wasteful number, since it uses less digits than its factorization.

87407140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4370366 (or 4370364 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 31.

The square root of 87407140 is about 9349.1785735432. The cubic root of 87407140 is about 443.7948962047.

The spelling of 87407140 in words is "eighty-seven million, four hundred seven thousand, one hundred forty".