26720406 has 12 divisors (see below), whose sum is σ = 57894252. Its totient is φ = 8906796.

The previous prime is 26720389. The next prime is 26720417. The reversal of 26720406 is 60402762.

It is a self number, because there is not a number n which added to its sum of digits gives 26720406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 742216 + ... + 742251.

It is an arithmetic number, because the mean of its divisors is an integer number (4824521).

Almost surely, 2^26720406 is an apocalyptic number.

26720406 is an abundant number, since it is smaller than the sum of its proper divisors (31173846).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26720406 is a wasteful number, since it uses less digits than its factorization.

26720406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1484475 (or 1484472 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 26720406 is about 5169.1784647079. The cubic root of 26720406 is about 298.9608715291.

The spelling of 26720406 in words is "twenty-six million, seven hundred twenty thousand, four hundred six".