287125436 has 12 divisors (see below), whose sum is σ = 541121112. Its totient is φ = 132519408.

The previous prime is 287125417. The next prime is 287125457. The reversal of 287125436 is 634521782.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 287125436.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2760770 + ... + 2760873.

It is an arithmetic number, because the mean of its divisors is an integer number (45093426).

Almost surely, 2^287125436 is an apocalyptic number.

287125436 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

287125436 is a deficient number, since it is larger than the sum of its proper divisors (253995676).

287125436 is a wasteful number, since it uses less digits than its factorization.

287125436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5521660 (or 5521658 counting only the distinct ones).

The product of its digits is 80640, while the sum is 38.

The square root of 287125436 is about 16944.7760681574. The cubic root of 287125436 is about 659.7163121172.

The spelling of 287125436 in words is "two hundred eighty-seven million, one hundred twenty-five thousand, four hundred thirty-six".