87700238 has 16 divisors (see below), whose sum is σ = 138687120. Its totient is φ = 41478336.

The previous prime is 87700237. The next prime is 87700241. The reversal of 87700238 is 83200778.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 87700198 and 87700207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87700237) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 31220 + ... + 33912.

It is an arithmetic number, because the mean of its divisors is an integer number (8667945).

Almost surely, 2^87700238 is an apocalyptic number.

87700238 is a deficient number, since it is larger than the sum of its proper divisors (50986882).

87700238 is a wasteful number, since it uses less digits than its factorization.

87700238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3571.

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 87700238 is about 9364.8405218669. The cubic root of 87700238 is about 444.2903945319.

The spelling of 87700238 in words is "eighty-seven million, seven hundred thousand, two hundred thirty-eight".