261179480 has 16 divisors (see below), whose sum is σ = 587653920. Its totient is φ = 104471776.

The previous prime is 261179447. The next prime is 261179497. The reversal of 261179480 is 84971162.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3264704 + ... + 3264783.

It is an arithmetic number, because the mean of its divisors is an integer number (36728370).

Almost surely, 2^261179480 is an apocalyptic number.

261179480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

261179480 is an abundant number, since it is smaller than the sum of its proper divisors (326474440).

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

261179480 is a wasteful number, since it uses less digits than its factorization.

261179480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6529498 (or 6529494 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 261179480 is about 16161.0482333294. The cubic root of 261179480 is about 639.2141069661.

The spelling of 261179480 in words is "two hundred sixty-one million, one hundred seventy-nine thousand, four hundred eighty".