26298540 has 96 divisors (see below), whose sum is σ = 84510720. Its totient is φ = 6782400.

The previous prime is 26298533. The next prime is 26298557. The reversal of 26298540 is 4589262.

It is a happy number.

26298540 is a `hidden beast` number, since 26 + 2 + 98 + 540 = 666.

It is a super-2 number, since 2×26298540² = 1383226412263200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 26298495 and 26298504.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15955 + ... + 17525.

It is an arithmetic number, because the mean of its divisors is an integer number (880320).

Almost surely, 2^26298540 is an apocalyptic number.

26298540 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 26298540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42255360).

26298540 is an abundant number, since it is smaller than the sum of its proper divisors (58212180).

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

26298540 is a wasteful number, since it uses less digits than its factorization.

26298540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1620 (or 1612 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 26298540 is about 5128.2102141000. The cubic root of 26298540 is about 297.3791708553.

The spelling of 26298540 in words is "twenty-six million, two hundred ninety-eight thousand, five hundred forty".