2602406420 has 24 divisors (see below), whose sum is σ = 5472879048. Its totient is φ = 1039472000.

The previous prime is 2602406399. The next prime is 2602406441. The reversal of 2602406420 is 246042062.

It is an interprime number because it is at equal distance from previous prime (2602406399) and next prime (2602406441).

It can be written as a sum of positive squares in 4 ways, for example, as 68492176 + 2533914244 = 8276^2 + 50338^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2602406420.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78791 + ... + 106830.

It is an arithmetic number, because the mean of its divisors is an integer number (228036627).

Almost surely, 2^2602406420 is an apocalyptic number.

2602406420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2602406420 is an abundant number, since it is smaller than the sum of its proper divisors (2870472628).

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

2602406420 is a wasteful number, since it uses less digits than its factorization.

2602406420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186331 (or 186329 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 2602406420 is about 51013.7865679465. The cubic root of 2602406420 is about 1375.4929661603.

Adding to 2602406420 its reverse (246042062), we get a palindrome (2848448482).

The spelling of 2602406420 in words is "two billion, six hundred two million, four hundred six thousand, four hundred twenty".