26156540 has 48 divisors (see below), whose sum is σ = 61236000. Its totient is φ = 9326592.

The previous prime is 26156531. The next prime is 26156551. The reversal of 26156540 is 4565162.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4436 + ... + 8484.

It is an arithmetic number, because the mean of its divisors is an integer number (1275750).

Almost surely, 2^26156540 is an apocalyptic number.

26156540 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 26156540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30618000).

26156540 is an abundant number, since it is smaller than the sum of its proper divisors (35079460).

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

26156540 is a wasteful number, since it uses less digits than its factorization.

26156540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4094 (or 4092 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 26156540 is about 5114.3464880667. The cubic root of 26156540 is about 296.8429677720.

The spelling of 26156540 in words is "twenty-six million, one hundred fifty-six thousand, five hundred forty".