287578412880 has 80 divisors (see below), whose sum is σ = 972537914304. Its totient is φ = 69715978240.

The previous prime is 287578412857. The next prime is 287578412887. The reversal of 287578412880 is 88214875782.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (287578412887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54462969 + ... + 54468248.

Almost surely, 2^287578412880 is an apocalyptic number.

287578412880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

287578412880 is an abundant number, since it is smaller than the sum of its proper divisors (684959501424).

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

287578412880 is a wasteful number, since it uses less digits than its factorization.

287578412880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108931244 (or 108931238 counting only the distinct ones).

The product of its (nonzero) digits is 16056320, while the sum is 60.

The spelling of 287578412880 in words is "two hundred eighty-seven billion, five hundred seventy-eight million, four hundred twelve thousand, eight hundred eighty".