2636940 has 48 divisors (see below), whose sum is σ = 7499520. Its totient is φ = 692160.

The previous prime is 2636939. The next prime is 2636957. The reversal of 2636940 is 496362.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 2636898 and 2636907.

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, 3951 + ... + 4569.

It is an arithmetic number, because the mean of its divisors is an integer number (156240).

2^2636940 is an apocalyptic number.

2636940 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 2636940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3749760).

2636940 is an abundant number, since it is smaller than the sum of its proper divisors (4862580).

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

2636940 is a wasteful number, since it uses less digits than its factorization.

2636940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702 (or 700 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 2636940 is about 1623.8657579985. The cubic root of 2636940 is about 138.1550452306.

The spelling of 2636940 in words is "two million, six hundred thirty-six thousand, nine hundred forty".