26258978 has 16 divisors (see below), whose sum is σ = 40997880. Its totient is φ = 12598656.

The previous prime is 26258971. The next prime is 26258987. The reversal of 26258978 is 87985262.

It can be written as a sum of positive squares in 4 ways, for example, as 25472209 + 786769 = 5047^2 + 887^2 .

It is not an unprimeable number, because it can be changed into a prime (26258971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8726 + ... + 11342.

Almost surely, 2^26258978 is an apocalyptic number.

26258978 is a deficient number, since it is larger than the sum of its proper divisors (14738902).

26258978 is a wasteful number, since it uses less digits than its factorization.

26258978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2821.

The product of its digits is 483840, while the sum is 47.

The square root of 26258978 is about 5124.3514711620. The cubic root of 26258978 is about 297.2299760182.

The spelling of 26258978 in words is "twenty-six million, two hundred fifty-eight thousand, nine hundred seventy-eight".