1063423440 has 240 divisors, whose sum is σ = 3807131328. Its totient is φ = 265089024.

The previous prime is 1063423421. The next prime is 1063423441. The reversal of 1063423440 is 443243601.

1063423440 is a `hidden beast` number, since 1 + 0 + 634 + 23 + 4 + 4 + 0 = 666.

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

It is a super-2 number, since 2×1063423440² = 2261738825482867200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1063423441) 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, 3463767 + ... + 3464073.

Almost surely, 2^1063423440 is an apocalyptic number.

1063423440 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 1063423440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1903565664).

1063423440 is an abundant number, since it is smaller than the sum of its proper divisors (2743707888).

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

1063423440 is a wasteful number, since it uses less digits than its factorization.

1063423440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626 (or 617 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 1063423440 is about 32610.1738725815. The cubic root of 1063423440 is about 1020.7093105509.

The spelling of 1063423440 in words is "one billion, sixty-three million, four hundred twenty-three thousand, four hundred forty".