26380830 has 64 divisors (see below), whose sum is σ = 72783360. Its totient is φ = 5994624.

The previous prime is 26380789. The next prime is 26380859. The reversal of 26380830 is 3808362.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56257 + ... + 56723.

It is an arithmetic number, because the mean of its divisors is an integer number (1137240).

Almost surely, 2^26380830 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26380830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36391680).

26380830 is an abundant number, since it is smaller than the sum of its proper divisors (46402530).

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

26380830 is a wasteful number, since it uses less digits than its factorization.

26380830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 753.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 26380830 is about 5136.2272146002. The cubic root of 26380830 is about 297.6890214157.

The spelling of 26380830 in words is "twenty-six million, three hundred eighty thousand, eight hundred thirty".