26621406 has 48 divisors (see below), whose sum is σ = 68824080. Its totient is φ = 7605360.

The previous prime is 26621393. The next prime is 26621407. The reversal of 26621406 is 60412662.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 26621406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26621407) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2385 + ... + 7676.

It is an arithmetic number, because the mean of its divisors is an integer number (1433835).

Almost surely, 2^26621406 is an apocalyptic number.

26621406 is an abundant number, since it is smaller than the sum of its proper divisors (42202674).

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

26621406 is a wasteful number, since it uses less digits than its factorization.

26621406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10086 (or 10073 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 26621406 is about 5159.5935886463. The cubic root of 26621406 is about 298.5911945802.

The spelling of 26621406 in words is "twenty-six million, six hundred twenty-one thousand, four hundred six".