26742778 has 4 divisors (see below), whose sum is σ = 40114170. Its totient is φ = 13371388.

The previous prime is 26742769. The next prime is 26742787. The reversal of 26742778 is 87724762.

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

It is an interprime number because it is at equal distance from previous prime (26742769) and next prime (26742787).

It can be written as a sum of positive squares in only one way, i.e., 25633969 + 1108809 = 5063^2 + 1053^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6685693 + ... + 6685696.

Almost surely, 2^26742778 is an apocalyptic number.

26742778 is a deficient number, since it is larger than the sum of its proper divisors (13371392).

26742778 is a wasteful number, since it uses less digits than its factorization.

26742778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13371391.

The product of its digits is 263424, while the sum is 43.

The square root of 26742778 is about 5171.3419921719. The cubic root of 26742778 is about 299.0442845188.

The spelling of 26742778 in words is "twenty-six million, seven hundred forty-two thousand, seven hundred seventy-eight".