26978142 has 16 divisors (see below), whose sum is σ = 54046080. Its totient is φ = 8977752.

The previous prime is 26978131. The next prime is 26978191. The reversal of 26978142 is 24187962.

It is a self number, because there is not a number n which added to its sum of digits gives 26978142.

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, 543 + ... + 7365.

It is an arithmetic number, because the mean of its divisors is an integer number (3377880).

Almost surely, 2^26978142 is an apocalyptic number.

26978142 is an abundant number, since it is smaller than the sum of its proper divisors (27067938).

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

26978142 is a wasteful number, since it uses less digits than its factorization.

26978142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7487.

The product of its digits is 48384, while the sum is 39.

The square root of 26978142 is about 5194.0487098217. The cubic root of 26978142 is about 299.9190225886.

The spelling of 26978142 in words is "twenty-six million, nine hundred seventy-eight thousand, one hundred forty-two".