4012033640 has 64 divisors (see below), whose sum is σ = 9328642560. Its totient is φ = 1551317760.

The previous prime is 4012033631. The next prime is 4012033657. The reversal of 4012033640 is 463302104.

It is a happy number.

4012033640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 2147987 + ... + 2149853.

It is an arithmetic number, because the mean of its divisors is an integer number (145760040).

Almost surely, 2^4012033640 is an apocalyptic number.

4012033640 is a gapful number since it is divisible by the number (40) 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 4012033640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4664321280).

4012033640 is an abundant number, since it is smaller than the sum of its proper divisors (5316608920).

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

4012033640 is a wasteful number, since it uses less digits than its factorization.

4012033640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3642 (or 3638 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 4012033640 is about 63340.6160374210. The cubic root of 4012033640 is about 1588.9913093835.

Adding to 4012033640 its reverse (463302104), we get a palindrome (4475335744).

The spelling of 4012033640 in words is "four billion, twelve million, thirty-three thousand, six hundred forty".