26086978 has 4 divisors (see below), whose sum is σ = 39130470. Its totient is φ = 13043488.

The previous prime is 26086969. The next prime is 26086999. The reversal of 26086978 is 87968062.

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., 25735329 + 351649 = 5073^2 + 593^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6521743 + ... + 6521746.

Almost surely, 2^26086978 is an apocalyptic number.

26086978 is a deficient number, since it is larger than the sum of its proper divisors (13043492).

26086978 is a wasteful number, since it uses less digits than its factorization.

26086978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13043491.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 26086978 is about 5107.5412871557. The cubic root of 26086978 is about 296.5795878474.

The spelling of 26086978 in words is "twenty-six million, eighty-six thousand, nine hundred seventy-eight".