261713388 has 24 divisors (see below), whose sum is σ = 612002160. Its totient is φ = 87046720.

The previous prime is 261713381. The next prime is 261713399. The reversal of 261713388 is 883317162.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (261713381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18123 + ... + 29186.

It is an arithmetic number, because the mean of its divisors is an integer number (25500090).

Almost surely, 2^261713388 is an apocalyptic number.

It is an amenable number.

261713388 is an abundant number, since it is smaller than the sum of its proper divisors (350288772).

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

261713388 is a wasteful number, since it uses less digits than its factorization.

261713388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47777 (or 47775 counting only the distinct ones).

The product of its digits is 48384, while the sum is 39.

The square root of 261713388 is about 16177.5581593762. The cubic root of 261713388 is about 639.6493750019.

The spelling of 261713388 in words is "two hundred sixty-one million, seven hundred thirteen thousand, three hundred eighty-eight".