26481000 has 256 divisors, whose sum is σ = 102735360. Its totient is φ = 5529600.

The previous prime is 26480989. The next prime is 26481017. The reversal of 26481000 is 18462.

It is a super-2 number, since 2×26481000² = 1402486722000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 272952 + ... + 273048.

It is an arithmetic number, because the mean of its divisors is an integer number (401310).

Almost surely, 2^26481000 is an apocalyptic number.

26481000 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 26481000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51367680).

26481000 is an abundant number, since it is smaller than the sum of its proper divisors (76254360).

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

26481000 is a wasteful number, since it uses less digits than its factorization.

26481000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141 (or 127 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 26481000 is about 5145.9692964494. The cubic root of 26481000 is about 298.0653280796.

Adding to 26481000 its reverse (18462), we get a palindrome (26499462).

The spelling of 26481000 in words is "twenty-six million, four hundred eighty-one thousand".