1078747920 has 240 divisors, whose sum is σ = 3961032192. Its totient is φ = 261918720.

The previous prime is 1078747919. The next prime is 1078747921. The reversal of 1078747920 is 297478701.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1078747919) and next prime (1078747921).

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (1078747921) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 378019 + ... + 380861.

Almost surely, 2^1078747920 is an apocalyptic number.

1078747920 is a gapful number since it is divisible by the number (10) 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 1078747920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1980516096).

1078747920 is an abundant number, since it is smaller than the sum of its proper divisors (2882284272).

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

1078747920 is a wasteful number, since it uses less digits than its factorization.

1078747920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2910 (or 2901 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 45.

The square root of 1078747920 is about 32844.2981352928. The cubic root of 1078747920 is about 1025.5889282644.

The spelling of 1078747920 in words is "one billion, seventy-eight million, seven hundred forty-seven thousand, nine hundred twenty".