26997750 has 144 divisors (see below), whose sum is σ = 80162784. Its totient is φ = 6552000.

The previous prime is 26997713. The next prime is 26997769. The reversal of 26997750 is 5779962.

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 = 26997696 and 26997705.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 380215 + ... + 380285.

It is an arithmetic number, because the mean of its divisors is an integer number (556686).

It is a vampire number, since it can be written as 2769 ⋅ 9750 (with its own digits).

Almost surely, 2^26997750 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26997750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40081392).

26997750 is an abundant number, since it is smaller than the sum of its proper divisors (53165034).

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

26997750 is a wasteful number, since it uses less digits than its factorization.

26997750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120 (or 94 counting only the distinct ones).

The product of its (nonzero) digits is 238140, while the sum is 45.

The square root of 26997750 is about 5195.9359118449. The cubic root of 26997750 is about 299.9916664352.

Adding to 26997750 its product of nonzero digits (238140), we get a triangular number (27235890 = T₇₃₈₀).

The spelling of 26997750 in words is "twenty-six million, nine hundred ninety-seven thousand, seven hundred fifty".