26331428 has 6 divisors (see below), whose sum is σ = 46080006. Its totient is φ = 13165712.

The previous prime is 26331413. The next prime is 26331433. The reversal of 26331428 is 82413362.

It can be written as a sum of positive squares in only one way, i.e., 17909824 + 8421604 = 4232^2 + 2902^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 26331428.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3291425 + ... + 3291432.

It is an arithmetic number, because the mean of its divisors is an integer number (7680001).

Almost surely, 2^26331428 is an apocalyptic number.

It is an amenable number.

26331428 is a deficient number, since it is larger than the sum of its proper divisors (19748578).

26331428 is a wasteful number, since it uses less digits than its factorization.

26331428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6582861 (or 6582859 counting only the distinct ones).

The product of its digits is 6912, while the sum is 29.

The square root of 26331428 is about 5131.4157890391. The cubic root of 26331428 is about 297.5030830836.

The spelling of 26331428 in words is "twenty-six million, three hundred thirty-one thousand, four hundred twenty-eight".