780236642 has 16 divisors (see below), whose sum is σ = 1203358464. Its totient is φ = 379188000.

The previous prime is 780236549. The next prime is 780236647. The reversal of 780236642 is 246632087.

780236642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 780236596 and 780236605.

It is not an unprimeable number, because it can be changed into a prime (780236647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4667 + ... + 39777.

It is an arithmetic number, because the mean of its divisors is an integer number (75209904).

Almost surely, 2^780236642 is an apocalyptic number.

780236642 is a deficient number, since it is larger than the sum of its proper divisors (423121822).

780236642 is a wasteful number, since it uses less digits than its factorization.

780236642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35425.

The product of its (nonzero) digits is 96768, while the sum is 38.

The square root of 780236642 is about 27932.7163376568. The cubic root of 780236642 is about 920.6094897979.

It can be divided in two parts, 7802 and 36642, that added together give a palindrome (44444).

The spelling of 780236642 in words is "seven hundred eighty million, two hundred thirty-six thousand, six hundred forty-two".