87652780 has 24 divisors (see below), whose sum is σ = 184457952. Its totient is φ = 34987392.

The previous prime is 87652777. The next prime is 87652781. The reversal of 87652780 is 8725678.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (87652781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5704 + ... + 14416.

It is an arithmetic number, because the mean of its divisors is an integer number (7685748).

Almost surely, 2^87652780 is an apocalyptic number.

It is an amenable number.

87652780 is an abundant number, since it is smaller than the sum of its proper divisors (96805172).

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

87652780 is a wasteful number, since it uses less digits than its factorization.

87652780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9225 (or 9223 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 43.

The square root of 87652780 is about 9362.3063397862. The cubic root of 87652780 is about 444.2102391507.

The spelling of 87652780 in words is "eighty-seven million, six hundred fifty-two thousand, seven hundred eighty".