1006544400 has 120 divisors (see below), whose sum is σ = 3364576320. Its totient is φ = 256734720.

The previous prime is 1006544393. The next prime is 1006544401. The reversal of 1006544400 is 44456001.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (1006544401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9366 + ... + 45834.

It is an arithmetic number, because the mean of its divisors is an integer number (28038136).

Almost surely, 2^1006544400 is an apocalyptic number.

1006544400 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 1006544400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1682288160).

1006544400 is an abundant number, since it is smaller than the sum of its proper divisors (2358031920).

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

1006544400 is a wasteful number, since it uses less digits than its factorization.

1006544400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36513 (or 36502 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 1006544400 is about 31726.0839058337. The cubic root of 1006544400 is about 1002.1767250966.

The spelling of 1006544400 in words is "one billion, six million, five hundred forty-four thousand, four hundred".