26790247 has 24 divisors (see below), whose sum is σ = 31834880. Its totient is φ = 22453200.

The previous prime is 26790241. The next prime is 26790251. The reversal of 26790247 is 74209762.

It is a happy number.

It is not a de Polignac number, because 26790247 - 2⁷ = 26790119 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26790241) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 98722 + ... + 98992.

Almost surely, 2^26790247 is an apocalyptic number.

26790247 is a deficient number, since it is larger than the sum of its proper divisors (5044633).

26790247 is a wasteful number, since it uses less digits than its factorization.

26790247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355 (or 344 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 26790247 is about 5175.9295783463. The cubic root of 26790247 is about 299.2211165892.

The spelling of 26790247 in words is "twenty-six million, seven hundred ninety thousand, two hundred forty-seven".