261481412 has 12 divisors (see below), whose sum is σ = 458250156. Its totient is φ = 130552800.

The previous prime is 261481399. The next prime is 261481447. The reversal of 261481412 is 214184162.

It can be written as a sum of positive squares in 2 ways, for example, as 236421376 + 25060036 = 15376^2 + 5006^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43823 + ... + 49430.

It is an arithmetic number, because the mean of its divisors is an integer number (38187513).

Almost surely, 2^261481412 is an apocalyptic number.

It is an amenable number.

261481412 is a deficient number, since it is larger than the sum of its proper divisors (196768744).

261481412 is a wasteful number, since it uses less digits than its factorization.

261481412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93958 (or 93956 counting only the distinct ones).

The product of its digits is 3072, while the sum is 29.

The square root of 261481412 is about 16170.3868846729. The cubic root of 261481412 is about 639.4603295641.

The spelling of 261481412 in words is "two hundred sixty-one million, four hundred eighty-one thousand, four hundred twelve".