87800000 has 84 divisors (see below), whose sum is σ = 218267280. Its totient is φ = 35040000.

The previous prime is 87799991. The next prime is 87800003. The reversal of 87800000 is 878.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87800003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 199781 + ... + 200219.

It is an arithmetic number, because the mean of its divisors is an integer number (2598420).

Almost surely, 2^87800000 is an apocalyptic number.

87800000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87800000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109133640).

87800000 is an abundant number, since it is smaller than the sum of its proper divisors (130467280).

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

87800000 is an frugal number, since it uses more digits than its factorization.

87800000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476 (or 446 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 87800000 is about 9370.1654200980. The cubic root of 87800000 is about 444.4587958329.

Adding to 87800000 its reverse (878), we get a palindrome (87800878).

87800000 divided by its reverse (878) gives a 5-th power (100000 = 10⁵).

The spelling of 87800000 in words is "eighty-seven million, eight hundred thousand".