261073456 has 40 divisors (see below), whose sum is σ = 579632544. Its totient is φ = 111590400.

The previous prime is 261073451. The next prime is 261073481. The reversal of 261073456 is 654370162.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (261073451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42006 + ... + 47818.

Almost surely, 2^261073456 is an apocalyptic number.

It is an amenable number.

261073456 is an abundant number, since it is smaller than the sum of its proper divisors (318559088).

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

261073456 is a wasteful number, since it uses less digits than its factorization.

261073456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6229 (or 6223 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 261073456 is about 16157.7676675957. The cubic root of 261073456 is about 639.1276004137.

The spelling of 261073456 in words is "two hundred sixty-one million, seventy-three thousand, four hundred fifty-six".