26998380 has 144 divisors (see below), whose sum is σ = 89742240. Its totient is φ = 6736896.

The previous prime is 26998379. The next prime is 26998403. The reversal of 26998380 is 8389962.

26998380 is a `hidden beast` number, since 269 + 9 + 8 + 380 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 155974 + ... + 156146.

It is an arithmetic number, because the mean of its divisors is an integer number (623210).

Almost surely, 2^26998380 is an apocalyptic number.

26998380 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 26998380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44871120).

26998380 is an abundant number, since it is smaller than the sum of its proper divisors (62743860).

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

26998380 is a wasteful number, since it uses less digits than its factorization.

26998380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225 (or 200 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 26998380 is about 5195.9965357956. The cubic root of 26998380 is about 299.9939998800.

The spelling of 26998380 in words is "twenty-six million, nine hundred ninety-eight thousand, three hundred eighty".