782780052 has 12 divisors (see below), whose sum is σ = 1826486816. Its totient is φ = 260926680.

The previous prime is 782780027. The next prime is 782780059. The reversal of 782780052 is 250087287.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×782780052² = 1225489219618245408, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (782780059) by changing a digit.

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, 32615824 + ... + 32615847.

Almost surely, 2^782780052 is an apocalyptic number.

It is an amenable number.

782780052 is an abundant number, since it is smaller than the sum of its proper divisors (1043706764).

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

782780052 is a wasteful number, since it uses less digits than its factorization.

782780052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65231678 (or 65231676 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 39.

The square root of 782780052 is about 27978.2067330985. The cubic root of 782780052 is about 921.6087369491.

The spelling of 782780052 in words is "seven hundred eighty-two million, seven hundred eighty thousand, fifty-two".