287938898 has 8 divisors (see below), whose sum is σ = 465132108. Its totient is φ = 132894864.

The previous prime is 287938897. The next prime is 287938907. The reversal of 287938898 is 898839782.

It can be written as a sum of positive squares in 2 ways, for example, as 281803369 + 6135529 = 16787^2 + 2477^2 .

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

It is a super-4 number, since 4×287938898⁴ (a number of 35 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 287938898.

It is not an unprimeable number, because it can be changed into a prime (287938891) 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, 5537261 + ... + 5537312.

Almost surely, 2^287938898 is an apocalyptic number.

287938898 is a deficient number, since it is larger than the sum of its proper divisors (177193210).

287938898 is a wasteful number, since it uses less digits than its factorization.

287938898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11074588.

The product of its digits is 13934592, while the sum is 62.

The square root of 287938898 is about 16968.7624180433. The cubic root of 287938898 is about 660.3387440779.

The spelling of 287938898 in words is "two hundred eighty-seven million, nine hundred thirty-eight thousand, eight hundred ninety-eight".