782428 has 12 divisors (see below), whose sum is σ = 1401400. Its totient is φ = 382032.

The previous prime is 782393. The next prime is 782429. The reversal of 782428 is 824287.

It is a super-2 number, since 2×782428² = 1224387150368, which contains 22 as substring.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 782428.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (782429) 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 3 ways as a sum of consecutive naturals, for example, 2103 + ... + 2446.

2⁷⁸²⁴²⁸ is an apocalyptic number.

It is an amenable number.

782428 is a deficient number, since it is larger than the sum of its proper divisors (618972).

782428 is a wasteful number, since it uses less digits than its factorization.

782428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4596 (or 4594 counting only the distinct ones).

The product of its digits is 7168, while the sum is 31.

The square root of 782428 is about 884.5496029053. The cubic root of 782428 is about 92.1470553028.

The spelling of 782428 in words is "seven hundred eighty-two thousand, four hundred twenty-eight".