287213696 has 192 divisors, whose sum is σ = 761866560. Its totient is φ = 106444800.

The previous prime is 287213683. The next prime is 287213699. The reversal of 287213696 is 696312782.

It is a Harshad number since it is a multiple of its sum of digits (44).

Its product of digits (217728) is a multiple of the sum of its prime divisors (224).

It is not an unprimeable number, because it can be changed into a prime (287213699) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1586726 + ... + 1586906.

It is an arithmetic number, because the mean of its divisors is an integer number (3968055).

Almost surely, 2^287213696 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 287213696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (380933280).

287213696 is an abundant number, since it is smaller than the sum of its proper divisors (474652864).

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

287213696 is a wasteful number, since it uses less digits than its factorization.

287213696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243 (or 224 counting only the distinct ones).

The product of its digits is 217728, while the sum is 44.

The square root of 287213696 is about 16947.3802105222. The cubic root of 287213696 is about 659.7839023168.

The spelling of 287213696 in words is "two hundred eighty-seven million, two hundred thirteen thousand, six hundred ninety-six".