287260992 has 196 divisors, whose sum is σ = 879506496. Its totient is φ = 93000960.

The previous prime is 287260991. The next prime is 287260993. The reversal of 287260992 is 299062782.

It is an interprime number because it is at equal distance from previous prime (287260991) and next prime (287260993).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (287260991) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 2192767 + ... + 2192897.

Almost surely, 2^287260992 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 287260992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (439753248).

287260992 is an abundant number, since it is smaller than the sum of its proper divisors (592245504).

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

287260992 is an equidigital number, since it uses as much as digits as its factorization.

287260992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208 (or 183 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 287260992 is about 16948.7755309934. The cubic root of 287260992 is about 659.8201162662.

The spelling of 287260992 in words is "two hundred eighty-seven million, two hundred sixty thousand, nine hundred ninety-two".