261047046 has 16 divisors (see below), whose sum is σ = 562255344. Its totient is φ = 80322144.

The previous prime is 261047021. The next prime is 261047077. The reversal of 261047046 is 640740162.

261047046 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×261047046² = 136291120450652232, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1673301 + ... + 1673456.

It is an arithmetic number, because the mean of its divisors is an integer number (35140959).

Almost surely, 2^261047046 is an apocalyptic number.

261047046 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

261047046 is an abundant number, since it is smaller than the sum of its proper divisors (301208298).

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

261047046 is a wasteful number, since it uses less digits than its factorization.

261047046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3346775.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 261047046 is about 16156.9503929424. The cubic root of 261047046 is about 639.1060484600.

The spelling of 261047046 in words is "two hundred sixty-one million, forty-seven thousand, forty-six".