2600406402 has 24 divisors (see below), whose sum is σ = 5716597488. Its totient is φ = 788001720.

The previous prime is 2600406379. The next prime is 2600406409. The reversal of 2600406402 is 2046040062.

It is a super-2 number, since 2×2600406402² = 13524226911125171208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2600406409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1790188 + ... + 1791639.

It is an arithmetic number, because the mean of its divisors is an integer number (238191562).

Almost surely, 2^2600406402 is an apocalyptic number.

2600406402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2600406402 is an abundant number, since it is smaller than the sum of its proper divisors (3116191086).

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

2600406402 is a wasteful number, since it uses less digits than its factorization.

2600406402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3581854 (or 3581843 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 2600406402 is about 50994.1800796914. The cubic root of 2600406402 is about 1375.1405083079.

Adding to 2600406402 its reverse (2046040062), we get a palindrome (4646446464).

The spelling of 2600406402 in words is "two billion, six hundred million, four hundred six thousand, four hundred two".