26720307 has 8 divisors (see below), whose sum is σ = 39585680. Its totient is φ = 17813520.

The previous prime is 26720303. The next prime is 26720347. The reversal of 26720307 is 70302762.

It is not a de Polignac number, because 26720307 - 2² = 26720303 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 989641 = 26720307 / (2 + 6 + 7 + 2 + 0 + 3 + 0 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26720303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 494794 + ... + 494847.

It is an arithmetic number, because the mean of its divisors is an integer number (4948210).

Almost surely, 2^26720307 is an apocalyptic number.

26720307 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

26720307 is a deficient number, since it is larger than the sum of its proper divisors (12865373).

26720307 is an equidigital number, since it uses as much as digits as its factorization.

26720307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989650 (or 989644 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 26720307 is about 5169.1688887093. The cubic root of 26720307 is about 298.9605023086.

The spelling of 26720307 in words is "twenty-six million, seven hundred twenty thousand, three hundred seven".