26641420 has 48 divisors (see below), whose sum is σ = 63433440. Its totient is φ = 9317376.

The previous prime is 26641399. The next prime is 26641427. The reversal of 26641420 is 2414662.

It is not an unprimeable number, because it can be changed into a prime (26641427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2244 + ... + 7636.

It is an arithmetic number, because the mean of its divisors is an integer number (1321530).

Almost surely, 2^26641420 is an apocalyptic number.

26641420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26641420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31716720).

26641420 is an abundant number, since it is smaller than the sum of its proper divisors (36792020).

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

26641420 is a wasteful number, since it uses less digits than its factorization.

26641420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5434 (or 5432 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 26641420 is about 5161.5327180984. The cubic root of 26641420 is about 298.6660028906. Note that the first 3 decimals are identical.

The spelling of 26641420 in words is "twenty-six million, six hundred forty-one thousand, four hundred twenty".