26157870 has 64 divisors (see below), whose sum is σ = 73440000. Its totient is φ = 6607008.

The previous prime is 26157863. The next prime is 26157907. The reversal of 26157870 is 7875162.

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 31 ways as a sum of consecutive naturals, for example, 2581 + ... + 7679.

It is an arithmetic number, because the mean of its divisors is an integer number (1147500).

Almost surely, 2^26157870 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26157870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36720000).

26157870 is an abundant number, since it is smaller than the sum of its proper divisors (47282130).

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

26157870 is a wasteful number, since it uses less digits than its factorization.

26157870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5134 (or 5128 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 26157870 is about 5114.4765128017. The cubic root of 26157870 is about 296.8479989478.

The spelling of 26157870 in words is "twenty-six million, one hundred fifty-seven thousand, eight hundred seventy".