26530140 has 192 divisors, whose sum is σ = 94381056. Its totient is φ = 5419008.

The previous prime is 26530129. The next prime is 26530159. The reversal of 26530140 is 4103562.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 234724 + ... + 234836.

It is an arithmetic number, because the mean of its divisors is an integer number (491568).

Almost surely, 2^26530140 is an apocalyptic number.

26530140 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 26530140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47190528).

26530140 is an abundant number, since it is smaller than the sum of its proper divisors (67850916).

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

26530140 is a wasteful number, since it uses less digits than its factorization.

26530140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188 (or 186 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 26530140 is about 5150.7416941641. The cubic root of 26530140 is about 298.2495844596.

The spelling of 26530140 in words is "twenty-six million, five hundred thirty thousand, one hundred forty".