247667480 has 16 divisors (see below), whose sum is σ = 557251920. Its totient is φ = 99066976.

The previous prime is 247667461. The next prime is 247667507. The reversal of 247667480 is 84766742.

It is a super-2 number, since 2×247667480² = 122678361299100800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3095804 + ... + 3095883.

It is an arithmetic number, because the mean of its divisors is an integer number (34828245).

Almost surely, 2^247667480 is an apocalyptic number.

247667480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

247667480 is an abundant number, since it is smaller than the sum of its proper divisors (309584440).

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

247667480 is a wasteful number, since it uses less digits than its factorization.

247667480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6191698 (or 6191694 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 44.

The square root of 247667480 is about 15737.4546861937. The cubic root of 247667480 is about 627.9952059893.

The spelling of 247667480 in words is "two hundred forty-seven million, six hundred sixty-seven thousand, four hundred eighty".