26428992 has 56 divisors (see below), whose sum is σ = 70408800. Its totient is φ = 8749056.

The previous prime is 26428949. The next prime is 26429009. The reversal of 26428992 is 29982462.

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, 33984 + ... + 34752.

It is an arithmetic number, because the mean of its divisors is an integer number (1257300).

Almost surely, 2^26428992 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 26428992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35204400).

26428992 is an abundant number, since it is smaller than the sum of its proper divisors (43979808).

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

26428992 is a wasteful number, since it uses less digits than its factorization.

26428992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963 (or 953 counting only the distinct ones).

The product of its digits is 124416, while the sum is 42.

The square root of 26428992 is about 5140.9135374951. The cubic root of 26428992 is about 297.8700693276.

The spelling of 26428992 in words is "twenty-six million, four hundred twenty-eight thousand, nine hundred ninety-two".