76780240428 has 24 divisors (see below), whose sum is σ = 179579449840. Its totient is φ = 25532619840.

The previous prime is 76780240403. The next prime is 76780240447. The reversal of 76780240428 is 82404208767.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7593943 + ... + 7604046.

Almost surely, 2^76780240428 is an apocalyptic number.

It is an amenable number.

76780240428 is an abundant number, since it is smaller than the sum of its proper divisors (102799209412).

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

76780240428 is a wasteful number, since it uses less digits than its factorization.

76780240428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15198417 (or 15198415 counting only the distinct ones).

The product of its (nonzero) digits is 1204224, while the sum is 48.

The spelling of 76780240428 in words is "seventy-six billion, seven hundred eighty million, two hundred forty thousand, four hundred twenty-eight".