2152289840 has 40 divisors (see below), whose sum is σ = 5086119408. Its totient is φ = 846800640.

The previous prime is 2152289833. The next prime is 2152289861. The reversal of 2152289840 is 489822512.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215642 + ... + 225401.

Almost surely, 2^2152289840 is an apocalyptic number.

2152289840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2152289840 is an abundant number, since it is smaller than the sum of its proper divisors (2933829568).

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

2152289840 is a wasteful number, since it uses less digits than its factorization.

2152289840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441117 (or 441111 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 41.

The square root of 2152289840 is about 46392.7778862185. Note that the first 3 decimals coincide. The cubic root of 2152289840 is about 1291.1209214335.

The spelling of 2152289840 in words is "two billion, one hundred fifty-two million, two hundred eighty-nine thousand, eight hundred forty".