87728346 has 24 divisors (see below), whose sum is σ = 197119104. Its totient is φ = 29242620.

The previous prime is 87728317. The next prime is 87728353. The reversal of 87728346 is 64382778.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

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, 89770 + ... + 90741.

It is an arithmetic number, because the mean of its divisors is an integer number (8213296).

Almost surely, 2^87728346 is an apocalyptic number.

87728346 is an abundant number, since it is smaller than the sum of its proper divisors (109390758).

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

87728346 is a wasteful number, since it uses less digits than its factorization.

87728346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180528 (or 180516 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 87728346 is about 9366.3411212704. The cubic root of 87728346 is about 444.3378546102.

The spelling of 87728346 in words is "eighty-seven million, seven hundred twenty-eight thousand, three hundred forty-six".