87381238 has 32 divisors (see below), whose sum is σ = 152974080. Its totient is φ = 36663840.

The previous prime is 87381233. The next prime is 87381251. The reversal of 87381238 is 83218378.

It is a self number, because there is not a number n which added to its sum of digits gives 87381238.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87381233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 161248 + ... + 161788.

It is an arithmetic number, because the mean of its divisors is an integer number (4780440).

Almost surely, 2^87381238 is an apocalyptic number.

87381238 is a deficient number, since it is larger than the sum of its proper divisors (65592842).

87381238 is a wasteful number, since it uses less digits than its factorization.

87381238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 772.

The product of its digits is 64512, while the sum is 40.

The square root of 87381238 is about 9347.7932155135. The cubic root of 87381238 is about 443.7510542063.

The spelling of 87381238 in words is "eighty-seven million, three hundred eighty-one thousand, two hundred thirty-eight".