2681388 has 36 divisors (see below), whose sum is σ = 6829368. Its totient is φ = 887040.

The previous prime is 2681387. The next prime is 2681389. The reversal of 2681388 is 8831862.

It is an interprime number because it is at equal distance from previous prime (2681387) and next prime (2681389).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (2681381) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7420 + ... + 7772.

2^2681388 is an apocalyptic number.

It is an amenable number.

2681388 is an abundant number, since it is smaller than the sum of its proper divisors (4147980).

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

2681388 is a wasteful number, since it uses less digits than its factorization.

2681388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574 (or 569 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 2681388 is about 1637.4944274714. The cubic root of 2681388 is about 138.9269667922.

The spelling of 2681388 in words is "two million, six hundred eighty-one thousand, three hundred eighty-eight".