261035412 has 24 divisors (see below), whose sum is σ = 664454112. Its totient is φ = 79101600.

The previous prime is 261035399. The next prime is 261035431. The reversal of 261035412 is 214530162.

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, 988639 + ... + 988902.

It is an arithmetic number, because the mean of its divisors is an integer number (27685588).

Almost surely, 2^261035412 is an apocalyptic number.

261035412 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

261035412 is an abundant number, since it is smaller than the sum of its proper divisors (403418700).

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

261035412 is a wasteful number, since it uses less digits than its factorization.

261035412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1977559 (or 1977557 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 261035412 is about 16156.5903581170. The cubic root of 261035412 is about 639.0965540408.

Adding to 261035412 its reverse (214530162), we get a palindrome (475565574).

The spelling of 261035412 in words is "two hundred sixty-one million, thirty-five thousand, four hundred twelve".