26402020 has 96 divisors (see below), whose sum is σ = 63745920. Its totient is φ = 9123840.

The previous prime is 26402017. The next prime is 26402021. The reversal of 26402020 is 2020462.

It is a junction number, because it is equal to n+sod(n) for n = 26401985 and 26402003.

It is not an unprimeable number, because it can be changed into a prime (26402021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 394027 + ... + 394093.

It is an arithmetic number, because the mean of its divisors is an integer number (664020).

Almost surely, 2^26402020 is an apocalyptic number.

26402020 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 26402020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31872960).

26402020 is an abundant number, since it is smaller than the sum of its proper divisors (37343900).

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

26402020 is a wasteful number, since it uses less digits than its factorization.

26402020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173 (or 171 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 26402020 is about 5138.2895986894. The cubic root of 26402020 is about 297.7687048092.

Adding to 26402020 its reverse (2020462), we get a palindrome (28422482).

The spelling of 26402020 in words is "twenty-six million, four hundred two thousand, twenty".