26428471 has 4 divisors (see below), whose sum is σ = 27142792. Its totient is φ = 25714152.

The previous prime is 26428459. The next prime is 26428481. The reversal of 26428471 is 17482462.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17482462 = 2 ⋅8741231.

It is a cyclic number.

It is not a de Polignac number, because 26428471 - 2¹⁹ = 25904183 is a prime.

It is a super-3 number, since 3×26428471³ (a number of 23 digits) contains 333 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 (26428481) 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, 357105 + ... + 357178.

It is an arithmetic number, because the mean of its divisors is an integer number (6785698).

Almost surely, 2^26428471 is an apocalyptic number.

26428471 is a deficient number, since it is larger than the sum of its proper divisors (714321).

26428471 is an equidigital number, since it uses as much as digits as its factorization.

26428471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714320.

The product of its digits is 21504, while the sum is 34.

The square root of 26428471 is about 5140.8628653175. The cubic root of 26428471 is about 297.8681119907.

The spelling of 26428471 in words is "twenty-six million, four hundred twenty-eight thousand, four hundred seventy-one".