261000296 has 8 divisors (see below), whose sum is σ = 489375570. Its totient is φ = 130500144.

The previous prime is 261000293. The next prime is 261000317. The reversal of 261000296 is 692000162.

261000296 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 151044100 + 109956196 = 12290^2 + 10486^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×261000296³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (261000293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16312511 + ... + 16312526.

Almost surely, 2^261000296 is an apocalyptic number.

It is an amenable number.

261000296 is a deficient number, since it is larger than the sum of its proper divisors (228375274).

261000296 is a wasteful number, since it uses less digits than its factorization.

261000296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32625043 (or 32625039 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 261000296 is about 16155.5035823709. The cubic root of 261000296 is about 639.0678944286.

The spelling of 261000296 in words is "two hundred sixty-one million, two hundred ninety-six", and thus it is an aban number.