26478645 has 16 divisors (see below), whose sum is σ = 42430272. Its totient is φ = 14100480.

The previous prime is 26478623. The next prime is 26478649. The reversal of 26478645 is 54687462.

It is not a de Polignac number, because 26478645 - 2⁶ = 26478581 is a prime.

It is a super-2 number, since 2×26478645² = 1402237282072050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 26478597 and 26478606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26478649) 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, 16530 + ... + 18060.

It is an arithmetic number, because the mean of its divisors is an integer number (2651892).

Almost surely, 2^26478645 is an apocalyptic number.

It is an amenable number.

26478645 is a deficient number, since it is larger than the sum of its proper divisors (15951627).

26478645 is a wasteful number, since it uses less digits than its factorization.

26478645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2692.

The product of its digits is 322560, while the sum is 42.

The square root of 26478645 is about 5145.7404714968. The cubic root of 26478645 is about 298.0564920002.

The spelling of 26478645 in words is "twenty-six million, four hundred seventy-eight thousand, six hundred forty-five".