287549052 has 72 divisors (see below), whose sum is σ = 801645264. Its totient is φ = 79930368.

The previous prime is 287549047. The next prime is 287549063. The reversal of 287549052 is 250945782.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 287548995 and 287549013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15148 + ... + 28364.

It is an arithmetic number, because the mean of its divisors is an integer number (11133962).

Almost surely, 2^287549052 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 287549052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (400822632).

287549052 is an abundant number, since it is smaller than the sum of its proper divisors (514096212).

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

287549052 is a wasteful number, since it uses less digits than its factorization.

287549052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13275 (or 13266 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 42.

The square root of 287549052 is about 16957.2713606877. The cubic root of 287549052 is about 660.0405943810.

The spelling of 287549052 in words is "two hundred eighty-seven million, five hundred forty-nine thousand, fifty-two".