26550138 has 32 divisors (see below), whose sum is σ = 55987200. Its totient is φ = 8380736.

The previous prime is 26550133. The next prime is 26550143. The reversal of 26550138 is 83105562.

It is an interprime number because it is at equal distance from previous prime (26550133) and next prime (26550143).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (26550133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7783 + ... + 10661.

It is an arithmetic number, because the mean of its divisors is an integer number (1749600).

Almost surely, 2^26550138 is an apocalyptic number.

26550138 is an abundant number, since it is smaller than the sum of its proper divisors (29437062).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26550138 is a wasteful number, since it uses less digits than its factorization.

26550138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2966.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 26550138 is about 5152.6826022956. The cubic root of 26550138 is about 298.3245042451.

It can be divided in two parts, 265 and 50138, that added together give a triangular number (50403 = T₃₁₇).

The spelling of 26550138 in words is "twenty-six million, five hundred fifty thousand, one hundred thirty-eight".