261082470 has 32 divisors (see below), whose sum is σ = 683562240. Its totient is φ = 63292640.

The previous prime is 261082433. The next prime is 261082483. The reversal of 261082470 is 74280162.

It is a super-2 number, since 2×261082470² = 136328112282601800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 395250 + ... + 395909.

It is an arithmetic number, because the mean of its divisors is an integer number (21361320).

Almost surely, 2^261082470 is an apocalyptic number.

261082470 is an abundant number, since it is smaller than the sum of its proper divisors (422479770).

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

261082470 is a wasteful number, since it uses less digits than its factorization.

261082470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 791180.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 261082470 is about 16158.0466022351. The cubic root of 261082470 is about 639.1349559807.

The spelling of 261082470 in words is "two hundred sixty-one million, eighty-two thousand, four hundred seventy".