26921016 has 24 divisors (see below), whose sum is σ = 72911280. Its totient is φ = 8973648.

The previous prime is 26921003. The next prime is 26921021. The reversal of 26921016 is 61012962.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×26921016² = 1449482204944512, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 186880 + ... + 187023.

It is an arithmetic number, because the mean of its divisors is an integer number (3037970).

Almost surely, 2^26921016 is an apocalyptic number.

It is an amenable number.

26921016 is an abundant number, since it is smaller than the sum of its proper divisors (45990264).

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

26921016 is a wasteful number, since it uses less digits than its factorization.

26921016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373915 (or 373908 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 26921016 is about 5188.5466173101. The cubic root of 26921016 is about 299.7071809497.

Adding to 26921016 its reverse (61012962), we get a palindrome (87933978).

The spelling of 26921016 in words is "twenty-six million, nine hundred twenty-one thousand, sixteen".