2038640 has 40 divisors (see below), whose sum is σ = 5022000. Its totient is φ = 766976.

The previous prime is 2038639. The next prime is 2038661. The reversal of 2038640 is 468302.

It is a happy number.

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

It is a congruent number.

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, 611 + ... + 2109.

It is an arithmetic number, because the mean of its divisors is an integer number (125550).

2^2038640 is an apocalyptic number.

2038640 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 2038640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2511000).

2038640 is an abundant number, since it is smaller than the sum of its proper divisors (2983360).

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

2038640 is a wasteful number, since it uses less digits than its factorization.

2038640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1529 (or 1523 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 2038640 is about 1427.8095111043. The cubic root of 2038640 is about 126.7983241725.

The spelling of 2038640 in words is "two million, thirty-eight thousand, six hundred forty".