287773472 has 72 divisors (see below), whose sum is σ = 662812416. Its totient is φ = 122629248.

The previous prime is 287773471. The next prime is 287773477. The reversal of 287773472 is 274377782.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (287773471) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 349253 + ... + 350075.

It is an arithmetic number, because the mean of its divisors is an integer number (9205728).

Almost surely, 2^287773472 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 287773472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (331406208).

287773472 is an abundant number, since it is smaller than the sum of its proper divisors (375038944).

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

287773472 is a wasteful number, since it uses less digits than its factorization.

287773472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1070 (or 1055 counting only the distinct ones).

The product of its digits is 921984, while the sum is 47.

The square root of 287773472 is about 16963.8872903589. The cubic root of 287773472 is about 660.2122610820.

The spelling of 287773472 in words is "two hundred eighty-seven million, seven hundred seventy-three thousand, four hundred seventy-two".