1055408640 has 480 divisors, whose sum is σ = 4095862848. Its totient is φ = 228556800.

The previous prime is 1055408633. The next prime is 1055408657. The reversal of 1055408640 is 468045501.

It is a tau number, because it is divible by the number of its divisors (480).

It is a super-2 number, since 2×1055408640² = 2227774794773299200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 34045425 + ... + 34045455.

Almost surely, 2^1055408640 is an apocalyptic number.

1055408640 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 1055408640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2047931424).

1055408640 is an abundant number, since it is smaller than the sum of its proper divisors (3040454208).

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

1055408640 is a wasteful number, since it uses less digits than its factorization.

1055408640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112 (or 65 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 1055408640 is about 32487.0534213246. The cubic root of 1055408640 is about 1018.1385504186.

The spelling of 1055408640 in words is "one billion, fifty-five million, four hundred eight thousand, six hundred forty".