1078297920 has 504 divisors, whose sum is σ = 4490033184. Its totient is φ = 245597184.

The previous prime is 1078297873. The next prime is 1078297943. The reversal of 1078297920 is 297928701.

It is a tau number, because it is divible by the number of its divisors (504).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3810099 + ... + 3810381.

It is an arithmetic number, because the mean of its divisors is an integer number (8908796).

Almost surely, 2^1078297920 is an apocalyptic number.

1078297920 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 1078297920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2245016592).

1078297920 is an abundant number, since it is smaller than the sum of its proper divisors (3411735264).

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

1078297920 is an equidigital number, since it uses as much as digits as its factorization.

1078297920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329 (or 300 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The square root of 1078297920 is about 32837.4469165920. The cubic root of 1078297920 is about 1025.4463001930.

The spelling of 1078297920 in words is "one billion, seventy-eight million, two hundred ninety-seven thousand, nine hundred twenty".