2401640 has 16 divisors (see below), whose sum is σ = 5403780. Its totient is φ = 960640.

The previous prime is 2401639. The next prime is 2401667. The reversal of 2401640 is 461042.

It can be written as a sum of positive squares in 2 ways, for example, as 2184484 + 217156 = 1478^2 + 466^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29981 + ... + 30060.

2^2401640 is an apocalyptic number.

2401640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2401640 is an abundant number, since it is smaller than the sum of its proper divisors (3002140).

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

2401640 is a wasteful number, since it uses less digits than its factorization.

2401640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60052 (or 60048 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2401640 is about 1549.7225558144. The cubic root of 2401640 is about 133.9170794626.

Adding to 2401640 its reverse (461042), we get a palindrome (2862682).

The spelling of 2401640 in words is "two million, four hundred one thousand, six hundred forty".