26445438 has 24 divisors (see below), whose sum is σ = 60669648. Its totient is φ = 8296512.

The previous prime is 26445437. The next prime is 26445479. The reversal of 26445438 is 83454462.

26445438 is a `hidden beast` number, since 2 + 644 + 5 + 4 + 3 + 8 = 666.

It is a super-3 number, since 3×26445438³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26445431) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42906 + ... + 43517.

It is an arithmetic number, because the mean of its divisors is an integer number (2527902).

Almost surely, 2^26445438 is an apocalyptic number.

26445438 is an abundant number, since it is smaller than the sum of its proper divisors (34224210).

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

26445438 is a wasteful number, since it uses less digits than its factorization.

26445438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86448 (or 86445 counting only the distinct ones).

The product of its digits is 92160, while the sum is 36.

The square root of 26445438 is about 5142.5128099014. The cubic root of 26445438 is about 297.9318418360.

The spelling of 26445438 in words is "twenty-six million, four hundred forty-five thousand, four hundred thirty-eight".