261413026 has 8 divisors (see below), whose sum is σ = 448136640. Its totient is φ = 112034148.

The previous prime is 261413023. The next prime is 261413027. The reversal of 261413026 is 620314162.

261413026 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (261413023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9336166 + ... + 9336193.

It is an arithmetic number, because the mean of its divisors is an integer number (56017080).

Almost surely, 2^261413026 is an apocalyptic number.

261413026 is a deficient number, since it is larger than the sum of its proper divisors (186723614).

261413026 is a wasteful number, since it uses less digits than its factorization.

261413026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18672368.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 261413026 is about 16168.2722020629. The cubic root of 261413026 is about 639.4045780588.

Adding to 261413026 its reverse (620314162), we get a palindrome (881727188).

The spelling of 261413026 in words is "two hundred sixty-one million, four hundred thirteen thousand, twenty-six".