26201520 has 120 divisors (see below), whose sum is σ = 88943712. Its totient is φ = 6912000.

The previous prime is 26201519. The next prime is 26201533. The reversal of 26201520 is 2510262.

It is a tau number, because it is divible by the number of its divisors (120).

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 = 26201493 and 26201502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 108600 + ... + 108840.

Almost surely, 2^26201520 is an apocalyptic number.

26201520 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 26201520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44471856).

26201520 is an abundant number, since it is smaller than the sum of its proper divisors (62742192).

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

26201520 is a wasteful number, since it uses less digits than its factorization.

26201520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411 (or 402 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 26201520 is about 5118.7420329608. The cubic root of 26201520 is about 297.0130253105.

Adding to 26201520 its reverse (2510262), we get a palindrome (28711782).

The spelling of 26201520 in words is "twenty-six million, two hundred one thousand, five hundred twenty".