781047452 has 6 divisors (see below), whose sum is σ = 1366833048. Its totient is φ = 390523724.

The previous prime is 781047437. The next prime is 781047461. The reversal of 781047452 is 254740187.

It is a super-2 number, since 2×781047452² = 1220070244551384608, 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 (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97630928 + ... + 97630935.

It is an arithmetic number, because the mean of its divisors is an integer number (227805508).

Almost surely, 2^781047452 is an apocalyptic number.

It is an amenable number.

781047452 is a deficient number, since it is larger than the sum of its proper divisors (585785596).

781047452 is a wasteful number, since it uses less digits than its factorization.

781047452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195261867 (or 195261865 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 38.

The square root of 781047452 is about 27947.2261950985. The cubic root of 781047452 is about 920.9282738379.

The spelling of 781047452 in words is "seven hundred eighty-one million, forty-seven thousand, four hundred fifty-two".