87983156 has 12 divisors (see below), whose sum is σ = 155333892. Its totient is φ = 43602048.

The previous prime is 87983153. The next prime is 87983173. The reversal of 87983156 is 65138978.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 39262756 + 48720400 = 6266^2 + 6980^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 87983156.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87983153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96875 + ... + 97778.

It is an arithmetic number, because the mean of its divisors is an integer number (12944491).

Almost surely, 2^87983156 is an apocalyptic number.

It is an amenable number.

87983156 is a deficient number, since it is larger than the sum of its proper divisors (67350736).

87983156 is a wasteful number, since it uses less digits than its factorization.

87983156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194770 (or 194768 counting only the distinct ones).

The product of its digits is 362880, while the sum is 47.

The square root of 87983156 is about 9379.9336884650. The cubic root of 87983156 is about 444.7676369692.

The spelling of 87983156 in words is "eighty-seven million, nine hundred eighty-three thousand, one hundred fifty-six".