261471030 has 32 divisors (see below), whose sum is σ = 627969888. Its totient is φ = 69676800.

The previous prime is 261471017. The next prime is 261471031. The reversal of 261471030 is 30174162.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261471031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66520 + ... + 70340.

It is an arithmetic number, because the mean of its divisors is an integer number (19624059).

Almost surely, 2^261471030 is an apocalyptic number.

261471030 is an abundant number, since it is smaller than the sum of its proper divisors (366498858).

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

261471030 is a wasteful number, since it uses less digits than its factorization.

261471030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6112.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 261471030 is about 16170.0658625746. The cubic root of 261471030 is about 639.4518662920.

The spelling of 261471030 in words is "two hundred sixty-one million, four hundred seventy-one thousand, thirty".