26161398 has 12 divisors (see below), whose sum is σ = 56683068. Its totient is φ = 8720460.

The previous prime is 26161397. The next prime is 26161411. The reversal of 26161398 is 89316162.

26161398 is a `hidden beast` number, since 2 + 616 + 1 + 39 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26161397) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 726688 + ... + 726723.

It is an arithmetic number, because the mean of its divisors is an integer number (4723589).

Almost surely, 2^26161398 is an apocalyptic number.

26161398 is an abundant number, since it is smaller than the sum of its proper divisors (30521670).

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

26161398 is a wasteful number, since it uses less digits than its factorization.

26161398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1453419 (or 1453416 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 26161398 is about 5114.8214045067. The cubic root of 26161398 is about 296.8613439776.

The spelling of 26161398 in words is "twenty-six million, one hundred sixty-one thousand, three hundred ninety-eight".