26620730 has 16 divisors (see below), whose sum is σ = 48003624. Its totient is φ = 10629120.

The previous prime is 26620717. The next prime is 26620733. The reversal of 26620730 is 3702662.

It can be written as a sum of positive squares in 4 ways, for example, as 18931201 + 7689529 = 4351^2 + 2773^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 26620730.

It is not an unprimeable number, because it can be changed into a prime (26620733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4334 + ... + 8486.

Almost surely, 2^26620730 is an apocalyptic number.

26620730 is a deficient number, since it is larger than the sum of its proper divisors (21382894).

26620730 is a wasteful number, since it uses less digits than its factorization.

26620730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4801.

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 26620730 is about 5159.5280791948. The cubic root of 26620730 is about 298.5886671736.

The spelling of 26620730 in words is "twenty-six million, six hundred twenty thousand, seven hundred thirty".