26901890 has 16 divisors (see below), whose sum is σ = 48530880. Its totient is φ = 10736880.

The previous prime is 26901859. The next prime is 26901913. The reversal of 26901890 is 9810962.

It is a Curzon number.

It is a nialpdrome in base 7.

It is a self number, because there is not a number n which added to its sum of digits gives 26901890.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2171 + ... + 7649.

It is an arithmetic number, because the mean of its divisors is an integer number (3033180).

Almost surely, 2^26901890 is an apocalyptic number.

26901890 is a deficient number, since it is larger than the sum of its proper divisors (21628990).

26901890 is a wasteful number, since it uses less digits than its factorization.

26901890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5977.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 26901890 is about 5186.7031918166. The cubic root of 26901890 is about 299.6361886122.

The spelling of 26901890 in words is "twenty-six million, nine hundred one thousand, eight hundred ninety".