87090370 has 16 divisors (see below), whose sum is σ = 157178880. Its totient is φ = 34743664.

The previous prime is 87090359. The next prime is 87090373. The reversal of 87090370 is 7309078.

It is not an unprimeable number, because it can be changed into a prime (87090373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7540 + ... + 15199.

It is an arithmetic number, because the mean of its divisors is an integer number (9823680).

Almost surely, 2^87090370 is an apocalyptic number.

87090370 is a deficient number, since it is larger than the sum of its proper divisors (70088510).

87090370 is a wasteful number, since it uses less digits than its factorization.

87090370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23129.

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 87090370 is about 9332.2221362331. Note that the first 3 decimals coincide. The cubic root of 87090370 is about 443.2581319798.

The spelling of 87090370 in words is "eighty-seven million, ninety thousand, three hundred seventy".