26890457 has 8 divisors (see below), whose sum is σ = 29419392. Its totient is φ = 24375600.

The previous prime is 26890433. The next prime is 26890463. The reversal of 26890457 is 75409862.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 26890457 - 2²⁴ = 10113241 is a prime.

It is a super-3 number, since 3×26890457³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26890417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 707 + ... + 7367.

It is an arithmetic number, because the mean of its divisors is an integer number (3677424).

Almost surely, 2^26890457 is an apocalyptic number.

It is an amenable number.

26890457 is a deficient number, since it is larger than the sum of its proper divisors (2528935).

26890457 is a wasteful number, since it uses less digits than its factorization.

26890457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7039.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 26890457 is about 5185.6009294970. The cubic root of 26890457 is about 299.5937352634.

The spelling of 26890457 in words is "twenty-six million, eight hundred ninety thousand, four hundred fifty-seven".