26444660 has 48 divisors (see below), whose sum is σ = 61471872. Its totient is φ = 9475200.

The previous prime is 26444653. The next prime is 26444681. The reversal of 26444660 is 6644462.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14774 + ... + 16466.

It is an arithmetic number, because the mean of its divisors is an integer number (1280664).

Almost surely, 2^26444660 is an apocalyptic number.

26444660 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 26444660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30735936).

26444660 is an abundant number, since it is smaller than the sum of its proper divisors (35027212).

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

26444660 is a wasteful number, since it uses less digits than its factorization.

26444660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1784 (or 1782 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 26444660 is about 5142.4371653915. The cubic root of 26444660 is about 297.9289201821.

Subtracting from 26444660 its sum of digits (32), we obtain a triangular number (26444628 = T₇₂₇₂).

The spelling of 26444660 in words is "twenty-six million, four hundred forty-four thousand, six hundred sixty".