291452130 has 24 divisors (see below), whose sum is σ = 757775772. Its totient is φ = 77720544.

The previous prime is 291452107. The next prime is 291452171. The reversal of 291452130 is 31254192.

It can be written as a sum of positive squares in 2 ways, for example, as 278122329 + 13329801 = 16677^2 + 3651^2 .

It is a junction number, because it is equal to n+sod(n) for n = 291452094 and 291452103.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1619089 + ... + 1619268.

Almost surely, 2^291452130 is an apocalyptic number.

291452130 is an abundant number, since it is smaller than the sum of its proper divisors (466323642).

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

291452130 is a wasteful number, since it uses less digits than its factorization.

291452130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3238370 (or 3238367 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 291452130 is about 17071.9691307125. The cubic root of 291452130 is about 663.0135607335.

The spelling of 291452130 in words is "two hundred ninety-one million, four hundred fifty-two thousand, one hundred thirty".