26543140 has 36 divisors (see below), whose sum is σ = 60365844. Its totient is φ = 9799296.

The previous prime is 26543123. The next prime is 26543141. The reversal of 26543140 is 4134562.

It can be written as a sum of positive squares in 6 ways, for example, as 13191424 + 13351716 = 3632^2 + 3654^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26543141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 547 + ... + 7306.

It is an arithmetic number, because the mean of its divisors is an integer number (1676829).

Almost surely, 2^26543140 is an apocalyptic number.

26543140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26543140 is an abundant number, since it is smaller than the sum of its proper divisors (33822704).

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

26543140 is a wasteful number, since it uses less digits than its factorization.

26543140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7888 (or 7873 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 26543140 is about 5152.0034937876. The cubic root of 26543140 is about 298.2982914707.

The spelling of 26543140 in words is "twenty-six million, five hundred forty-three thousand, one hundred forty".