2001426720 has 96 divisors (see below), whose sum is σ = 6315926400. Its totient is φ = 532746240.

The previous prime is 2001426683. The next prime is 2001426751. The reversal of 2001426720 is 276241002.

It is a tau number, because it is divible by the number of its divisors (96).

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 284040 + ... + 291000.

It is an arithmetic number, because the mean of its divisors is an integer number (65790900).

Almost surely, 2^2001426720 is an apocalyptic number.

2001426720 is a gapful number since it is divisible by the number (20) 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 2001426720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3157963200).

2001426720 is an abundant number, since it is smaller than the sum of its proper divisors (4314499680).

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

2001426720 is a wasteful number, since it uses less digits than its factorization.

2001426720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7578 (or 7570 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 2001426720 is about 44737.3079207947. The cubic root of 2001426720 is about 1260.2205711107.

Adding to 2001426720 its reverse (276241002), we get a palindrome (2277667722).

The spelling of 2001426720 in words is "two billion, one million, four hundred twenty-six thousand, seven hundred twenty".