26999945 has 8 divisors (see below), whose sum is σ = 37028544. Its totient is φ = 18514224.

The previous prime is 26999939. The next prime is 26999963. The reversal of 26999945 is 54999962.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 26999945 - 2¹² = 26995849 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 385679 + ... + 385748.

It is an arithmetic number, because the mean of its divisors is an integer number (4628568).

Almost surely, 2^26999945 is an apocalyptic number.

It is an amenable number.

26999945 is a deficient number, since it is larger than the sum of its proper divisors (10028599).

26999945 is an equidigital number, since it uses as much as digits as its factorization.

26999945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771439.

The product of its digits is 1574640, while the sum is 53.

The square root of 26999945 is about 5196.1471303265. The cubic root of 26999945 is about 299.9997962962. Note that the first 3 decimals are identical.

The spelling of 26999945 in words is "twenty-six million, nine hundred ninety-nine thousand, nine hundred forty-five".