26098398 has 12 divisors (see below), whose sum is σ = 56546568. Its totient is φ = 8699460.

The previous prime is 26098351. The next prime is 26098409. The reversal of 26098398 is 89389062.

26098398 is a `hidden beast` number, since 2 + 609 + 8 + 39 + 8 = 666.

It is a super-2 number, since 2×26098398² = 1362252756332808, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 724938 + ... + 724973.

It is an arithmetic number, because the mean of its divisors is an integer number (4712214).

Almost surely, 2^26098398 is an apocalyptic number.

26098398 is an abundant number, since it is smaller than the sum of its proper divisors (30448170).

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

26098398 is a wasteful number, since it uses less digits than its factorization.

26098398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1449919 (or 1449916 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 26098398 is about 5108.6591195734. The cubic root of 26098398 is about 296.6228590506.

The spelling of 26098398 in words is "twenty-six million, ninety-eight thousand, three hundred ninety-eight".