26378447 has 16 divisors (see below), whose sum is σ = 28600320. Its totient is φ = 24263712.

The previous prime is 26378411. The next prime is 26378449. The reversal of 26378447 is 74487362.

It is not a de Polignac number, because 26378447 - 2¹⁶ = 26312911 is a prime.

It is a super-2 number, since 2×26378447² = 1391644932263618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26378449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118178 + ... + 118400.

It is an arithmetic number, because the mean of its divisors is an integer number (1787520).

Almost surely, 2^26378447 is an apocalyptic number.

26378447 is a deficient number, since it is larger than the sum of its proper divisors (2221873).

26378447 is a wasteful number, since it uses less digits than its factorization.

26378447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422.

The product of its digits is 225792, while the sum is 41.

The square root of 26378447 is about 5135.9952297486. The cubic root of 26378447 is about 297.6800576556.

The spelling of 26378447 in words is "twenty-six million, three hundred seventy-eight thousand, four hundred forty-seven".