87967780 has 24 divisors (see below), whose sum is σ = 185347008. Its totient is φ = 35070048.

The previous prime is 87967729. The next prime is 87967787. The reversal of 87967780 is 8776978.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (87967787) 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, 1024 + ... + 13303.

It is an arithmetic number, because the mean of its divisors is an integer number (7722792).

Almost surely, 2^87967780 is an apocalyptic number.

It is an amenable number.

87967780 is an abundant number, since it is smaller than the sum of its proper divisors (97379228).

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

87967780 is a wasteful number, since it uses less digits than its factorization.

87967780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14643 (or 14641 counting only the distinct ones).

The product of its (nonzero) digits is 1185408, while the sum is 52.

The square root of 87967780 is about 9379.1140306534. The cubic root of 87967780 is about 444.7417261550.

The spelling of 87967780 in words is "eighty-seven million, nine hundred sixty-seven thousand, seven hundred eighty".