261012048 has 40 divisors (see below), whose sum is σ = 735580896. Its totient is φ = 79094400.

The previous prime is 261012043. The next prime is 261012049. The reversal of 261012048 is 840210162.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261012043) 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, 246643 + ... + 247698.

Almost surely, 2^261012048 is an apocalyptic number.

It is an amenable number.

261012048 is an abundant number, since it is smaller than the sum of its proper divisors (474568848).

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

261012048 is a wasteful number, since it uses less digits than its factorization.

261012048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494363 (or 494357 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 261012048 is about 16155.8672933396. The cubic root of 261012048 is about 639.0774860055.

The spelling of 261012048 in words is "two hundred sixty-one million, twelve thousand, forty-eight".