287428011 has 8 divisors (see below), whose sum is σ = 412717200. Its totient is φ = 176878752.

The previous prime is 287428007. The next prime is 287428013. The reversal of 287428011 is 110824782.

It is a happy number.

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

It is not a de Polignac number, because 287428011 - 2² = 287428007 is a prime.

It is a super-2 number, since 2×287428011² = 165229723014832242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (287428013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3684936 + ... + 3685013.

It is an arithmetic number, because the mean of its divisors is an integer number (51589650).

Almost surely, 2^287428011 is an apocalyptic number.

287428011 is a deficient number, since it is larger than the sum of its proper divisors (125289189).

287428011 is a wasteful number, since it uses less digits than its factorization.

287428011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7369965.

The product of its (nonzero) digits is 7168, while the sum is 33.

The square root of 287428011 is about 16953.7019851123. The cubic root of 287428011 is about 659.9479688091.

The spelling of 287428011 in words is "two hundred eighty-seven million, four hundred twenty-eight thousand, eleven".