26147992 has 32 divisors (see below), whose sum is σ = 53333280. Its totient is φ = 11946240.

The previous prime is 26147981. The next prime is 26148019. The reversal of 26147992 is 29974162.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9492 + ... + 11932.

It is an arithmetic number, because the mean of its divisors is an integer number (1666665).

Almost surely, 2^26147992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26147992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26666640).

26147992 is an abundant number, since it is smaller than the sum of its proper divisors (27185288).

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

26147992 is a wasteful number, since it uses less digits than its factorization.

26147992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2563 (or 2559 counting only the distinct ones).

The product of its digits is 54432, while the sum is 40.

The square root of 26147992 is about 5113.5107313860. The cubic root of 26147992 is about 296.8106279932.

The spelling of 26147992 in words is "twenty-six million, one hundred forty-seven thousand, nine hundred ninety-two".