26599920 has 80 divisors (see below), whose sum is σ = 83164320. Its totient is φ = 7032832.

The previous prime is 26599907. The next prime is 26599933. The reversal of 26599920 is 2999562.

It is an interprime number because it is at equal distance from previous prime (26599907) and next prime (26599933).

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 32476 + ... + 33284.

It is an arithmetic number, because the mean of its divisors is an integer number (1039554).

Almost surely, 2^26599920 is an apocalyptic number.

26599920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26599920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41582160).

26599920 is an abundant number, since it is smaller than the sum of its proper divisors (56564400).

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

26599920 is a wasteful number, since it uses less digits than its factorization.

26599920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 962 (or 956 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 42.

The square root of 26599920 is about 5157.5110276179. The cubic root of 26599920 is about 298.5108424861.

The spelling of 26599920 in words is "twenty-six million, five hundred ninety-nine thousand, nine hundred twenty".