781295652 has 48 divisors (see below), whose sum is σ = 2036130880. Its totient is φ = 259075584.

The previous prime is 781295651. The next prime is 781295689. The reversal of 781295652 is 256592187.

781295652 is a `hidden beast` number, since 7 + 81 + 2 + 9 + 565 + 2 = 666.

It is a super-2 number, since 2×781295652² = 1220845791668210208, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 781295598 and 781295607.

It is not an unprimeable number, because it can be changed into a prime (781295651) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 2103 + ... + 39585.

Almost surely, 2^781295652 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 781295652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1018065440).

781295652 is an abundant number, since it is smaller than the sum of its proper divisors (1254835228).

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

781295652 is a wasteful number, since it uses less digits than its factorization.

781295652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37689 (or 37681 counting only the distinct ones).

The product of its digits is 302400, while the sum is 45.

The square root of 781295652 is about 27951.6663546201. Note that the first 3 decimals coincide. The cubic root of 781295652 is about 921.0258138740.

The spelling of 781295652 in words is "seven hundred eighty-one million, two hundred ninety-five thousand, six hundred fifty-two".