26989142 has 4 divisors (see below), whose sum is σ = 40483716. Its totient is φ = 13494570.

The previous prime is 26989133. The next prime is 26989147. The reversal of 26989142 is 24198962.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 26989142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26989147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6747284 + ... + 6747287.

It is an arithmetic number, because the mean of its divisors is an integer number (10120929).

Almost surely, 2^26989142 is an apocalyptic number.

26989142 is a deficient number, since it is larger than the sum of its proper divisors (13494574).

26989142 is a wasteful number, since it uses less digits than its factorization.

26989142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13494573.

The product of its digits is 62208, while the sum is 41.

The square root of 26989142 is about 5195.1075061061. The cubic root of 26989142 is about 299.9597797932.

The spelling of 26989142 in words is "twenty-six million, nine hundred eighty-nine thousand, one hundred forty-two".