87867378 has 24 divisors (see below), whose sum is σ = 195526188. Its totient is φ = 28497312.

The previous prime is 87867371. The next prime is 87867427. The reversal of 87867378 is 87376878.

It can be written as a sum of positive squares in 2 ways, for example, as 82682649 + 5184729 = 9093^2 + 2277^2 .

It is a super-2 number, since 2×87867378² = 15441352233189768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87867371) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65301 + ... + 66632.

Almost surely, 2^87867378 is an apocalyptic number.

87867378 is an abundant number, since it is smaller than the sum of its proper divisors (107658810).

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

87867378 is a wasteful number, since it uses less digits than its factorization.

87867378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131978 (or 131975 counting only the distinct ones).

The product of its digits is 3161088, while the sum is 54.

The square root of 87867378 is about 9373.7600780050. The cubic root of 87867378 is about 444.5724597949.

The spelling of 87867378 in words is "eighty-seven million, eight hundred sixty-seven thousand, three hundred seventy-eight".