1061396784 has 240 divisors, whose sum is σ = 3585603840. Its totient is φ = 297665280.

The previous prime is 1061396771. The next prime is 1061396803. The reversal of 1061396784 is 4876931601.

It is a happy number.

It is a super-2 number, since 2×1061396784² = 2253126266171085312, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1605414 + ... + 1606074.

It is an arithmetic number, because the mean of its divisors is an integer number (14940016).

Almost surely, 2^1061396784 is an apocalyptic number.

1061396784 is a gapful number since it is divisible by the number (14) 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 1061396784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1792801920).

1061396784 is an abundant number, since it is smaller than the sum of its proper divisors (2524207056).

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

1061396784 is an equidigital number, since it uses as much as digits as its factorization.

1061396784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750 (or 732 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 1061396784 is about 32579.0850700261. The cubic root of 1061396784 is about 1020.0604808428.

The spelling of 1061396784 in words is "one billion, sixty-one million, three hundred ninety-six thousand, seven hundred eighty-four".