2631420 has 96 divisors (see below), whose sum is σ = 8951040. Its totient is φ = 636480.

The previous prime is 2631401. The next prime is 2631427. The reversal of 2631420 is 241362.

It is a happy number.

2631420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a d-powerful number, because it can be written as 2¹⁹ + 6⁵ + 3⁷ + 1 + 4² + 2²¹ + 0 .

It is a junction number, because it is equal to n+sod(n) for n = 2631393 and 2631402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2631427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5719 + ... + 6161.

It is an arithmetic number, because the mean of its divisors is an integer number (93240).

2^2631420 is an apocalyptic number.

2631420 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 2631420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4475520).

2631420 is an abundant number, since it is smaller than the sum of its proper divisors (6319620).

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

2631420 is a wasteful number, since it uses less digits than its factorization.

2631420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472 (or 464 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2631420 is about 1622.1652196987. The cubic root of 2631420 is about 138.0585762671.

Adding to 2631420 its reverse (241362), we get a palindrome (2872782).

The spelling of 2631420 in words is "two million, six hundred thirty-one thousand, four hundred twenty".