26980380 has 288 divisors, whose sum is σ = 104832000. Its totient is φ = 5588352.

The previous prime is 26980333. The next prime is 26980391. The reversal of 26980380 is 8308962.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1173049 + ... + 1173071.

It is an arithmetic number, because the mean of its divisors is an integer number (364000).

Almost surely, 2^26980380 is an apocalyptic number.

26980380 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 26980380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52416000).

26980380 is an abundant number, since it is smaller than the sum of its proper divisors (77851620).

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

26980380 is a wasteful number, since it uses less digits than its factorization.

26980380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78 (or 59 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 26980380 is about 5194.2641442268. The cubic root of 26980380 is about 299.9273157247.

The spelling of 26980380 in words is "twenty-six million, nine hundred eighty thousand, three hundred eighty".