1078587776 has 64 divisors (see below), whose sum is σ = 2466996480. Its totient is φ = 460128768.

The previous prime is 1078587773. The next prime is 1078587781. The reversal of 1078587776 is 6777858701.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1078587773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200741 + ... + 206043.

It is an arithmetic number, because the mean of its divisors is an integer number (38546820).

Almost surely, 2^1078587776 is an apocalyptic number.

1078587776 is a gapful number since it is divisible by the number (16) 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 1078587776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1233498240).

1078587776 is an abundant number, since it is smaller than the sum of its proper divisors (1388408704).

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

1078587776 is an equidigital number, since it uses as much as digits as its factorization.

1078587776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5551 (or 5539 counting only the distinct ones).

The product of its (nonzero) digits is 4609920, while the sum is 56.

The square root of 1078587776 is about 32841.8601178435. The cubic root of 1078587776 is about 1025.5381749672.

The spelling of 1078587776 in words is "one billion, seventy-eight million, five hundred eighty-seven thousand, seven hundred seventy-six".