2392289640 has 480 divisors, whose sum is σ = 9254888280. Its totient is φ = 552075264.

The previous prime is 2392289611. The next prime is 2392289687. The reversal of 2392289640 is 469822932.

2392289640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 12 ways, for example, as 378613764 + 2013675876 = 19458^2 + 44874^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 9308392 + ... + 9308648.

Almost surely, 2^2392289640 is an apocalyptic number.

2392289640 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 2392289640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4627444140).

2392289640 is an abundant number, since it is smaller than the sum of its proper divisors (6862598640).

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

2392289640 is a wasteful number, since it uses less digits than its factorization.

2392289640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323 (or 297 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The square root of 2392289640 is about 48911.0380180180. The cubic root of 2392289640 is about 1337.4305928405.

The spelling of 2392289640 in words is "two billion, three hundred ninety-two million, two hundred eighty-nine thousand, six hundred forty".