26401623 has 4 divisors (see below), whose sum is σ = 35202168. Its totient is φ = 17601080.

The previous prime is 26401619. The next prime is 26401643. The reversal of 26401623 is 32610462.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 26401623 - 2² = 26401619 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 26401593 and 26401602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26401603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4400268 + ... + 4400273.

It is an arithmetic number, because the mean of its divisors is an integer number (8800542).

Almost surely, 2^26401623 is an apocalyptic number.

26401623 is a deficient number, since it is larger than the sum of its proper divisors (8800545).

26401623 is an equidigital number, since it uses as much as digits as its factorization.

26401623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8800544.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 26401623 is about 5138.2509670120. The cubic root of 26401623 is about 297.7672123127.

The spelling of 26401623 in words is "twenty-six million, four hundred one thousand, six hundred twenty-three".