261462444 has 24 divisors (see below), whose sum is σ = 610530480. Its totient is φ = 87089664.

The previous prime is 261462427. The next prime is 261462469. The reversal of 261462444 is 444264162.

It is a nude number because it is divisible by every one of its digits.

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, 10552 + ... + 25184.

It is an arithmetic number, because the mean of its divisors is an integer number (25438770).

Almost surely, 2^261462444 is an apocalyptic number.

It is an amenable number.

261462444 is an abundant number, since it is smaller than the sum of its proper divisors (349068036).

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

261462444 is a wasteful number, since it uses less digits than its factorization.

261462444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16129 (or 16127 counting only the distinct ones).

The product of its digits is 36864, while the sum is 33.

The square root of 261462444 is about 16169.8003698252. The cubic root of 261462444 is about 639.4448669266. Note that the first 3 decimals are identical.

The spelling of 261462444 in words is "two hundred sixty-one million, four hundred sixty-two thousand, four hundred forty-four".