26720045 has 8 divisors (see below), whose sum is σ = 34979040. Its totient is φ = 19432720.

The previous prime is 26720027. The next prime is 26720051. The reversal of 26720045 is 54002762.

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

It is not a de Polignac number, because 26720045 - 2²⁰ = 25671469 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 26719996 and 26720023.

It is a congruent number.

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, 242855 + ... + 242964.

It is an arithmetic number, because the mean of its divisors is an integer number (4372380).

Almost surely, 2^26720045 is an apocalyptic number.

It is an amenable number.

26720045 is a deficient number, since it is larger than the sum of its proper divisors (8258995).

26720045 is a wasteful number, since it uses less digits than its factorization.

26720045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485835.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 26720045 is about 5169.1435460819. The cubic root of 26720045 is about 298.9595251753.

The spelling of 26720045 in words is "twenty-six million, seven hundred twenty thousand, forty-five".