26506147 has 16 divisors (see below), whose sum is σ = 28283904. Its totient is φ = 24804000.

The previous prime is 26506093. The next prime is 26506157. The reversal of 26506147 is 74160562.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26506147 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (26506157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202272 + ... + 202402.

It is an arithmetic number, because the mean of its divisors is an integer number (1767744).

It is a vampire number, since it can be written as 4061 ⋅ 6527 (with its own digits).

Almost surely, 2^26506147 is an apocalyptic number.

26506147 is a deficient number, since it is larger than the sum of its proper divisors (1777757).

26506147 is a wasteful number, since it uses less digits than its factorization.

26506147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 26506147 is about 5148.4120852939. The cubic root of 26506147 is about 298.1596482518.

The spelling of 26506147 in words is "twenty-six million, five hundred six thousand, one hundred forty-seven".