26264978 has 4 divisors (see below), whose sum is σ = 39397470. Its totient is φ = 13132488.

The previous prime is 26264951. The next prime is 26264989. The reversal of 26264978 is 87946262.

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., 23107249 + 3157729 = 4807^2 + 1777^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6566243 + ... + 6566246.

Almost surely, 2^26264978 is an apocalyptic number.

26264978 is a deficient number, since it is larger than the sum of its proper divisors (13132492).

26264978 is a wasteful number, since it uses less digits than its factorization.

26264978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13132491.

The product of its digits is 290304, while the sum is 44.

The square root of 26264978 is about 5124.9368776601. The cubic root of 26264978 is about 297.2526126448.

The spelling of 26264978 in words is "twenty-six million, two hundred sixty-four thousand, nine hundred seventy-eight".