26101620 has 36 divisors (see below), whose sum is σ = 79175460. Its totient is φ = 6960384.

The previous prime is 26101609. The next prime is 26101631. The reversal of 26101620 is 2610162.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (26101609) and next prime (26101631).

It can be written as a sum of positive squares in 2 ways, for example, as 5253264 + 20848356 = 2292^2 + 4566^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a junction number, because it is equal to n+sod(n) for n = 26101593 and 26101602.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 72325 + ... + 72684.

Almost surely, 2^26101620 is an apocalyptic number.

26101620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26101620 is an abundant number, since it is smaller than the sum of its proper divisors (53073840).

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

26101620 is a wasteful number, since it uses less digits than its factorization.

26101620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145024 (or 145019 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 26101620 is about 5108.9744567770. The cubic root of 26101620 is about 296.6350651578.

Adding to 26101620 its reverse (2610162), we get a palindrome (28711782).

The spelling of 26101620 in words is "twenty-six million, one hundred one thousand, six hundred twenty".