26129970 has 48 divisors (see below), whose sum is σ = 68290560. Its totient is φ = 6931872.

The previous prime is 26129963. The next prime is 26130011. The reversal of 26129970 is 7992162.

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 23 ways as a sum of consecutive naturals, for example, 19791 + ... + 21069.

It is an arithmetic number, because the mean of its divisors is an integer number (1422720).

Almost surely, 2^26129970 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26129970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34145280).

26129970 is an abundant number, since it is smaller than the sum of its proper divisors (42160590).

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

26129970 is a wasteful number, since it uses less digits than its factorization.

26129970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1519 (or 1516 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 26129970 is about 5111.7482332368. The cubic root of 26129970 is about 296.7424219842.

The spelling of 26129970 in words is "twenty-six million, one hundred twenty-nine thousand, nine hundred seventy".