287400774144 has 160 divisors (see below), whose sum is σ = 840871627200. Its totient is φ = 86505881600.

The previous prime is 287400774121. The next prime is 287400774169. The reversal of 287400774144 is 441477004782.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 287400774093 and 287400774102.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2460424 + ... + 2574584.

It is an arithmetic number, because the mean of its divisors is an integer number (5255447670).

Almost surely, 2^287400774144 is an apocalyptic number.

287400774144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 287400774144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (420435813600).

287400774144 is an abundant number, since it is smaller than the sum of its proper divisors (553470853056).

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

287400774144 is a wasteful number, since it uses less digits than its factorization.

287400774144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114342 (or 114326 counting only the distinct ones).

The product of its (nonzero) digits is 1404928, while the sum is 48.

The spelling of 287400774144 in words is "two hundred eighty-seven billion, four hundred million, seven hundred seventy-four thousand, one hundred forty-four".