26455638 has 96 divisors (see below), whose sum is σ = 65427840. Its totient is φ = 7050240.

The previous prime is 26455633. The next prime is 26455691. The reversal of 26455638 is 83655462.

It is a super-4 number, since 4×26455638⁴ (a number of 31 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 26455596 and 26455605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26455633) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 362370 + ... + 362442.

It is an arithmetic number, because the mean of its divisors is an integer number (681540).

Almost surely, 2^26455638 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26455638, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32713920).

26455638 is an abundant number, since it is smaller than the sum of its proper divisors (38972202).

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

26455638 is a wasteful number, since it uses less digits than its factorization.

26455638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142 (or 125 counting only the distinct ones).

The product of its digits is 172800, while the sum is 39.

The square root of 26455638 is about 5143.5044473588. The cubic root of 26455638 is about 297.9701409958.

The spelling of 26455638 in words is "twenty-six million, four hundred fifty-five thousand, six hundred thirty-eight".