1064778240 has 160 divisors (see below), whose sum is σ = 3583609920. Its totient is φ = 268959744.

The previous prime is 1064778233. The next prime is 1064778283. The reversal of 1064778240 is 428774601.

It is a tau number, because it is divible by the number of its divisors (160).

It is a super-2 number, since 2×1064778240² = 2267505400754995200, which contains 22 as substring.

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, 142272 + ... + 149568.

It is an arithmetic number, because the mean of its divisors is an integer number (22397562).

Almost surely, 2^1064778240 is an apocalyptic number.

1064778240 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 1064778240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1791804960).

1064778240 is an abundant number, since it is smaller than the sum of its proper divisors (2518831680).

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

1064778240 is an equidigital number, since it uses as much as digits as its factorization.

1064778240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7342 (or 7326 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 39.

The square root of 1064778240 is about 32630.9399190400. The cubic root of 1064778240 is about 1021.1425873575.

The spelling of 1064778240 in words is "one billion, sixty-four million, seven hundred seventy-eight thousand, two hundred forty".