87698240 has 224 divisors, whose sum is σ = 263347200. Its totient is φ = 27697152.

The previous prime is 87698227. The next prime is 87698267. The reversal of 87698240 is 4289678.

It is a tau number, because it is divible by the number of its divisors (224).

It is a junction number, because it is equal to n+sod(n) for n = 87698191 and 87698200.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1865897 + ... + 1865943.

Almost surely, 2^87698240 is an apocalyptic number.

87698240 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 87698240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131673600).

87698240 is an abundant number, since it is smaller than the sum of its proper divisors (175648960).

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

87698240 is a wasteful number, since it uses less digits than its factorization.

87698240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102 (or 78 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 87698240 is about 9364.7338456573. The cubic root of 87698240 is about 444.2870205427.

The spelling of 87698240 in words is "eighty-seven million, six hundred ninety-eight thousand, two hundred forty".