26666430 has 64 divisors (see below), whose sum is σ = 76336128. Its totient is φ = 5829120.

The previous prime is 26666429. The next prime is 26666459. The reversal of 26666430 is 3466662.

It is a super-2 number, since 2×26666430² = 1422196977889800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 26666391 and 26666400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2070 + ... + 7590.

It is an arithmetic number, because the mean of its divisors is an integer number (1192752).

Almost surely, 2^26666430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26666430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38168064).

26666430 is an abundant number, since it is smaller than the sum of its proper divisors (49669698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26666430 is a wasteful number, since it uses less digits than its factorization.

26666430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5561.

The product of its (nonzero) digits is 31104, while the sum is 33.

The square root of 26666430 is about 5163.9548797409. The cubic root of 26666430 is about 298.7594326019.

The spelling of 26666430 in words is "twenty-six million, six hundred sixty-six thousand, four hundred thirty".