26520140 has 48 divisors (see below), whose sum is σ = 57480192. Its totient is φ = 10273536.

The previous prime is 26520139. The next prime is 26520211. The reversal of 26520140 is 4102562.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134522 + ... + 134718.

It is an arithmetic number, because the mean of its divisors is an integer number (1197504).

Almost surely, 2^26520140 is an apocalyptic number.

26520140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26520140 is an abundant number, since it is smaller than the sum of its proper divisors (30960052).

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

26520140 is a wasteful number, since it uses less digits than its factorization.

26520140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386 (or 384 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 26520140 is about 5149.7708686892. The cubic root of 26520140 is about 298.2121066996.

The spelling of 26520140 in words is "twenty-six million, five hundred twenty thousand, one hundred forty".