2001402588 has 48 divisors (see below), whose sum is σ = 4969841184. Its totient is φ = 624691200.

The previous prime is 2001402587. The next prime is 2001402593. The reversal of 2001402588 is 8852041002.

It is a super-2 number, since 2×2001402588² = 8011224638506195488, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001402583) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15288 + ... + 65088.

It is an arithmetic number, because the mean of its divisors is an integer number (103538358).

Almost surely, 2^2001402588 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2001402588, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2484920592).

2001402588 is an abundant number, since it is smaller than the sum of its proper divisors (2968438596).

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

2001402588 is a wasteful number, since it uses less digits than its factorization.

2001402588 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50022 (or 50020 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 2001402588 is about 44737.0382122018. The cubic root of 2001402588 is about 1260.2155060964.

The spelling of 2001402588 in words is "two billion, one million, four hundred two thousand, five hundred eighty-eight".