26161840 has 20 divisors (see below), whose sum is σ = 60826464. Its totient is φ = 10464704.

The previous prime is 26161831. The next prime is 26161859. The reversal of 26161840 is 4816162.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 26161799 and 26161808.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163432 + ... + 163591.

Almost surely, 2^26161840 is an apocalyptic number.

26161840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26161840 is an abundant number, since it is smaller than the sum of its proper divisors (34664624).

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

26161840 is a wasteful number, since it uses less digits than its factorization.

26161840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327036 (or 327030 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 26161840 is about 5114.8646120890. The cubic root of 26161840 is about 296.8630158043.

The spelling of 26161840 in words is "twenty-six million, one hundred sixty-one thousand, eight hundred forty".