247894148 has 6 divisors (see below), whose sum is σ = 433814766. Its totient is φ = 123947072.

The previous prime is 247894123. The next prime is 247894151. The reversal of 247894148 is 841498742.

It can be written as a sum of positive squares in only one way, i.e., 193989184 + 53904964 = 13928^2 + 7342^2 .

It is a super-2 number, since 2×247894148² = 122903017225291808, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30986765 + ... + 30986772.

It is an arithmetic number, because the mean of its divisors is an integer number (72302461).

Almost surely, 2^247894148 is an apocalyptic number.

It is an amenable number.

247894148 is a deficient number, since it is larger than the sum of its proper divisors (185920618).

247894148 is a wasteful number, since it uses less digits than its factorization.

247894148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61973541 (or 61973539 counting only the distinct ones).

The product of its digits is 516096, while the sum is 47.

The square root of 247894148 is about 15744.6545849695. The cubic root of 247894148 is about 628.1867302779.

The spelling of 247894148 in words is "two hundred forty-seven million, eight hundred ninety-four thousand, one hundred forty-eight".