87780248 has 16 divisors (see below), whose sum is σ = 174269880. Its totient is φ = 41308288.

The previous prime is 87780223. The next prime is 87780263. The reversal of 87780248 is 84208778.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 87780199 and 87780208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 322586 + ... + 322857.

Almost surely, 2^87780248 is an apocalyptic number.

It is an amenable number.

87780248 is a deficient number, since it is larger than the sum of its proper divisors (86489632).

87780248 is a wasteful number, since it uses less digits than its factorization.

87780248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645466 (or 645462 counting only the distinct ones).

The product of its (nonzero) digits is 200704, while the sum is 44.

The square root of 87780248 is about 9369.1113772865. Note that the first 3 decimals coincide. The cubic root of 87780248 is about 444.4254639857.

The spelling of 87780248 in words is "eighty-seven million, seven hundred eighty thousand, two hundred forty-eight".