26828378 has 4 divisors (see below), whose sum is σ = 40242570. Its totient is φ = 13414188.

The previous prime is 26828371. The next prime is 26828381. The reversal of 26828378 is 87382862.

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

It can be written as a sum of positive squares in only one way, i.e., 16024009 + 10804369 = 4003^2 + 3287^2 .

It is a super-2 number, since 2×26828378² = 1439523732221768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (26828371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6707093 + ... + 6707096.

Almost surely, 2^26828378 is an apocalyptic number.

26828378 is a deficient number, since it is larger than the sum of its proper divisors (13414192).

26828378 is a wasteful number, since it uses less digits than its factorization.

26828378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13414191.

The product of its digits is 258048, while the sum is 44.

The square root of 26828378 is about 5179.6117615126. The cubic root of 26828378 is about 299.3630114053.

The spelling of 26828378 in words is "twenty-six million, eight hundred twenty-eight thousand, three hundred seventy-eight".