261023072 has 24 divisors (see below), whose sum is σ = 525842856. Its totient is φ = 127475712.

The previous prime is 261023071. The next prime is 261023093. The reversal of 261023072 is 270320162.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261023071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93473 + ... + 96224.

It is an arithmetic number, because the mean of its divisors is an integer number (21910119).

Almost surely, 2^261023072 is an apocalyptic number.

It is an amenable number.

261023072 is an abundant number, since it is smaller than the sum of its proper divisors (264819784).

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

261023072 is a wasteful number, since it uses less digits than its factorization.

261023072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189750 (or 189742 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 261023072 is about 16156.2084660975. The cubic root of 261023072 is about 639.0864831521.

The spelling of 261023072 in words is "two hundred sixty-one million, twenty-three thousand, seventy-two".