26971638 has 16 divisors (see below), whose sum is σ = 54828336. Its totient is φ = 8843040.

The previous prime is 26971619. The next prime is 26971691. The reversal of 26971638 is 83617962.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 26971638.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36481 + ... + 37212.

It is an arithmetic number, because the mean of its divisors is an integer number (3426771).

Almost surely, 2^26971638 is an apocalyptic number.

26971638 is an abundant number, since it is smaller than the sum of its proper divisors (27856698).

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

26971638 is a wasteful number, since it uses less digits than its factorization.

26971638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73759.

The product of its digits is 108864, while the sum is 42.

The square root of 26971638 is about 5193.4225709064. The cubic root of 26971638 is about 299.8949187530.

The spelling of 26971638 in words is "twenty-six million, nine hundred seventy-one thousand, six hundred thirty-eight".