1066233840 has 320 divisors, whose sum is σ = 3976888320. Its totient is φ = 231183360.

The previous prime is 1066233787. The next prime is 1066233859. The reversal of 1066233840 is 483326601.

It is a super-2 number, since 2×1066233840² = 2273709203122291200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3072547 + ... + 3072893.

It is an arithmetic number, because the mean of its divisors is an integer number (12427776).

Almost surely, 2^1066233840 is an apocalyptic number.

1066233840 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 1066233840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1988444160).

1066233840 is an abundant number, since it is smaller than the sum of its proper divisors (2910654480).

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

1066233840 is a wasteful number, since it uses less digits than its factorization.

1066233840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460 (or 454 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 1066233840 is about 32653.2362867756. The cubic root of 1066233840 is about 1021.6076915123.

The spelling of 1066233840 in words is "one billion, sixty-six million, two hundred thirty-three thousand, eight hundred forty".