261139362 has 32 divisors (see below), whose sum is σ = 570654720. Its totient is φ = 79008720.

The previous prime is 261139339. The next prime is 261139367. The reversal of 261139362 is 263931162.

261139362 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (261139367) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44703 + ... + 50205.

It is an arithmetic number, because the mean of its divisors is an integer number (17832960).

Almost surely, 2^261139362 is an apocalyptic number.

261139362 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

261139362 is an abundant number, since it is smaller than the sum of its proper divisors (309515358).

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

261139362 is a wasteful number, since it uses less digits than its factorization.

261139362 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6238.

The product of its digits is 11664, while the sum is 33.

The square root of 261139362 is about 16159.8069914216. The cubic root of 261139362 is about 639.1813768493.

The spelling of 261139362 in words is "two hundred sixty-one million, one hundred thirty-nine thousand, three hundred sixty-two".