770998128 has 20 divisors (see below), whose sum is σ = 1991745288. Its totient is φ = 256999360.

The previous prime is 770998121. The next prime is 770998133. The reversal of 770998128 is 821899077.

It is a super-2 number, since 2×770998128² = 1188876226759008768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (770998121) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 8031183 + ... + 8031278.

Almost surely, 2^770998128 is an apocalyptic number.

It is an amenable number.

770998128 is an abundant number, since it is smaller than the sum of its proper divisors (1220747160).

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

770998128 is a wasteful number, since it uses less digits than its factorization.

770998128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16062472 (or 16062466 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 51.

The square root of 770998128 is about 27766.8530445926. The cubic root of 770998128 is about 916.9615133211.

The spelling of 770998128 in words is "seven hundred seventy million, nine hundred ninety-eight thousand, one hundred twenty-eight".