26618990 has 8 divisors (see below), whose sum is σ = 47914200. Its totient is φ = 10647592.

The previous prime is 26618989. The next prime is 26618993. The reversal of 26618990 is 9981662.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26618993) 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 3 ways as a sum of consecutive naturals, for example, 1330940 + ... + 1330959.

It is an arithmetic number, because the mean of its divisors is an integer number (5989275).

Almost surely, 2^26618990 is an apocalyptic number.

26618990 is a deficient number, since it is larger than the sum of its proper divisors (21295210).

26618990 is a wasteful number, since it uses less digits than its factorization.

26618990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2661906.

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 26618990 is about 5159.3594563667. The cubic root of 26618990 is about 298.5821615218.

The spelling of 26618990 in words is "twenty-six million, six hundred eighteen thousand, nine hundred ninety".