26428497 has 4 divisors (see below), whose sum is σ = 35238000. Its totient is φ = 17618996.

The previous prime is 26428481. The next prime is 26428511. The reversal of 26428497 is 79482462.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 26428497 - 2⁴ = 26428481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26428417) 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, 4404747 + ... + 4404752.

It is an arithmetic number, because the mean of its divisors is an integer number (8809500).

Almost surely, 2^26428497 is an apocalyptic number.

It is an amenable number.

26428497 is a deficient number, since it is larger than the sum of its proper divisors (8809503).

26428497 is an equidigital number, since it uses as much as digits as its factorization.

26428497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8809502.

The product of its digits is 193536, while the sum is 42.

The square root of 26428497 is about 5140.8653940752. The cubic root of 26428497 is about 297.8682096703.

The spelling of 26428497 in words is "twenty-six million, four hundred twenty-eight thousand, four hundred ninety-seven".