261332030 has 16 divisors (see below), whose sum is σ = 470685600. Its totient is φ = 104468832.

The previous prime is 261332011. The next prime is 261332039. The reversal of 261332030 is 30233162.

It is a junction number, because it is equal to n+sod(n) for n = 261331993 and 261332011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261332039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11396 + ... + 25544.

It is an arithmetic number, because the mean of its divisors is an integer number (29417850).

Almost surely, 2^261332030 is an apocalyptic number.

261332030 is a deficient number, since it is larger than the sum of its proper divisors (209353570).

261332030 is a wasteful number, since it uses less digits than its factorization.

261332030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16003.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 261332030 is about 16165.7672258387. The cubic root of 261332030 is about 639.3385337053.

Adding to 261332030 its reverse (30233162), we get a palindrome (291565192).

It can be divided in two parts, 2613 and 32030, that added together give a palindrome (34643).

The spelling of 261332030 in words is "two hundred sixty-one million, three hundred thirty-two thousand, thirty".