26985945 has 32 divisors (see below), whose sum is σ = 49690368. Its totient is φ = 12250368.

The previous prime is 26985929. The next prime is 26985989. The reversal of 26985945 is 54958962.

It is not a de Polignac number, because 26985945 - 2⁴ = 26985929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 26985894 and 26985903.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15667 + ... + 17303.

It is an arithmetic number, because the mean of its divisors is an integer number (1552824).

Almost surely, 2^26985945 is an apocalyptic number.

It is an amenable number.

26985945 is a deficient number, since it is larger than the sum of its proper divisors (22704423).

26985945 is a wasteful number, since it uses less digits than its factorization.

26985945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1809.

The product of its digits is 777600, while the sum is 48.

The square root of 26985945 is about 5194.7998036498. The cubic root of 26985945 is about 299.9479354092.

The spelling of 26985945 in words is "twenty-six million, nine hundred eighty-five thousand, nine hundred forty-five".