261069130 has 32 divisors (see below), whose sum is σ = 544631040. Its totient is φ = 88247040.

The previous prime is 261069103. The next prime is 261069131. The reversal of 261069130 is 31960162.

It is not an unprimeable number, because it can be changed into a prime (261069131) 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, 21295 + ... + 31234.

It is an arithmetic number, because the mean of its divisors is an integer number (17019720).

Almost surely, 2^261069130 is an apocalyptic number.

261069130 is an abundant number, since it is smaller than the sum of its proper divisors (283561910).

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

261069130 is a wasteful number, since it uses less digits than its factorization.

261069130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52614.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 261069130 is about 16157.6337995388. The cubic root of 261069130 is about 639.1240702690.

It can be divided in two parts, 26 and 1069130, that added together give a square (1069156 = 1034²).

The spelling of 261069130 in words is "two hundred sixty-one million, sixty-nine thousand, one hundred thirty".