2636920 has 64 divisors (see below), whose sum is σ = 6985440. Its totient is φ = 883200.

The previous prime is 2636917. The next prime is 2636929. The reversal of 2636920 is 296362.

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is a d-powerful number, because it can be written as 2⁹ + 6² + 3 + 6⁵ + 9⁶ + 2²¹ + 0 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2636929) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5490 + ... + 5950.

2^2636920 is an apocalyptic number.

2636920 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 2636920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3492720).

2636920 is an abundant number, since it is smaller than the sum of its proper divisors (4348520).

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

2636920 is a wasteful number, since it uses less digits than its factorization.

2636920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496 (or 492 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 2636920 is about 1623.8595998423. The cubic root of 2636920 is about 138.1546959485.

The spelling of 2636920 in words is "two million, six hundred thirty-six thousand, nine hundred twenty".