2660388 has 48 divisors (see below), whose sum is σ = 6531840. Its totient is φ = 841984.

The previous prime is 2660377. The next prime is 2660401. The reversal of 2660388 is 8830662.

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29848 + ... + 29936.

It is an arithmetic number, because the mean of its divisors is an integer number (136080).

2^2660388 is an apocalyptic number.

It is an amenable number.

2660388 is an abundant number, since it is smaller than the sum of its proper divisors (3871452).

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

2660388 is a wasteful number, since it uses less digits than its factorization.

2660388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196 (or 194 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 2660388 is about 1631.0695877246. The cubic root of 2660388 is about 138.5633347332.

The spelling of 2660388 in words is "two million, six hundred sixty thousand, three hundred eighty-eight".