87446720 has 28 divisors (see below), whose sum is σ = 208233264. Its totient is φ = 34978560.

The previous prime is 87446701. The next prime is 87446747. The reversal of 87446720 is 2764478.

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 3 ways as a sum of consecutive naturals, for example, 136316 + ... + 136955.

Almost surely, 2^87446720 is an apocalyptic number.

87446720 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

87446720 is an abundant number, since it is smaller than the sum of its proper divisors (120786544).

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

87446720 is a wasteful number, since it uses less digits than its factorization.

87446720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273288 (or 273278 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 38.

The square root of 87446720 is about 9351.2950974718. The cubic root of 87446720 is about 443.8618730036.

The spelling of 87446720 in words is "eighty-seven million, four hundred forty-six thousand, seven hundred twenty".