26492978 has 4 divisors (see below), whose sum is σ = 39739470. Its totient is φ = 13246488.

The previous prime is 26492969. The next prime is 26493023. The reversal of 26492978 is 87929462.

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., 26491609 + 1369 = 5147^2 + 37^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6623243 + ... + 6623246.

Almost surely, 2^26492978 is an apocalyptic number.

26492978 is a deficient number, since it is larger than the sum of its proper divisors (13246492).

26492978 is a wasteful number, since it uses less digits than its factorization.

26492978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13246491.

The product of its digits is 435456, while the sum is 47.

The square root of 26492978 is about 5147.1329883732. The cubic root of 26492978 is about 298.1102620365.

The spelling of 26492978 in words is "twenty-six million, four hundred ninety-two thousand, nine hundred seventy-eight".