287640098 has 8 divisors (see below), whose sum is σ = 432704592. Its totient is φ = 143405236.

The previous prime is 287640097. The next prime is 287640113. The reversal of 287640098 is 890046782.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (287640091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206540 + ... + 207927.

It is an arithmetic number, because the mean of its divisors is an integer number (54088074).

Almost surely, 2^287640098 is an apocalyptic number.

287640098 is a deficient number, since it is larger than the sum of its proper divisors (145064494).

287640098 is a wasteful number, since it uses less digits than its factorization.

287640098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414816.

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

The square root of 287640098 is about 16959.9557192818. The cubic root of 287640098 is about 660.1102494122.

The spelling of 287640098 in words is "two hundred eighty-seven million, six hundred forty thousand, ninety-eight".