26778030 has 64 divisors (see below), whose sum is σ = 68428800. Its totient is φ = 6687360.

The previous prime is 26778023. The next prime is 26778061. The reversal of 26778030 is 3087762.

It is a junction number, because it is equal to n+sod(n) for n = 26777982 and 26778000.

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 31 ways as a sum of consecutive naturals, for example, 61915 + ... + 62345.

It is an arithmetic number, because the mean of its divisors is an integer number (1069200).

Almost surely, 2^26778030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26778030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34214400).

26778030 is an abundant number, since it is smaller than the sum of its proper divisors (41650770).

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

26778030 is a wasteful number, since it uses less digits than its factorization.

26778030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569.

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 26778030 is about 5174.7492692883. The cubic root of 26778030 is about 299.1756256536.

The spelling of 26778030 in words is "twenty-six million, seven hundred seventy-eight thousand, thirty".