26978850 has 72 divisors (see below), whose sum is σ = 73120320. Its totient is φ = 7131360.

The previous prime is 26978843. The next prime is 26978851. The reversal of 26978850 is 5887962.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 26978796 and 26978805.

It is not an unprimeable number, because it can be changed into a prime (26978851) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 74971 + ... + 75329.

It is an arithmetic number, because the mean of its divisors is an integer number (1015560).

Almost surely, 2^26978850 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26978850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36560160).

26978850 is an abundant number, since it is smaller than the sum of its proper divisors (46141470).

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

26978850 is a wasteful number, since it uses less digits than its factorization.

26978850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544 (or 536 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 26978850 is about 5194.1168642995. The cubic root of 26978850 is about 299.9216462041.

The spelling of 26978850 in words is "twenty-six million, nine hundred seventy-eight thousand, eight hundred fifty".