26720427 has 16 divisors (see below), whose sum is σ = 36557568. Its totient is φ = 17353440.

The previous prime is 26720423. The next prime is 26720467. The reversal of 26720427 is 72402762.

It is not a de Polignac number, because 26720427 - 2² = 26720423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 26720394 and 26720403.

It is not an unprimeable number, because it can be changed into a prime (26720423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25402 + ... + 26432.

It is an arithmetic number, because the mean of its divisors is an integer number (2284848).

Almost surely, 2^26720427 is an apocalyptic number.

26720427 is a deficient number, since it is larger than the sum of its proper divisors (9837141).

26720427 is a wasteful number, since it uses less digits than its factorization.

26720427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1250.

The product of its (nonzero) digits is 9408, while the sum is 30.

The square root of 26720427 is about 5169.1804959781. The cubic root of 26720427 is about 298.9609498485.

The spelling of 26720427 in words is "twenty-six million, seven hundred twenty thousand, four hundred twenty-seven".