770554128 has 80 divisors (see below), whose sum is σ = 2087723520. Its totient is φ = 244564992.

The previous prime is 770554117. The next prime is 770554153. The reversal of 770554128 is 821455077.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97825 + ... + 105407.

It is an arithmetic number, because the mean of its divisors is an integer number (26096544).

Almost surely, 2^770554128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 770554128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1043861760).

770554128 is an abundant number, since it is smaller than the sum of its proper divisors (1317169392).

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

770554128 is a wasteful number, since it uses less digits than its factorization.

770554128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7696 (or 7690 counting only the distinct ones).

The product of its (nonzero) digits is 78400, while the sum is 39.

The square root of 770554128 is about 27758.8567487928. The cubic root of 770554128 is about 916.7854605420.

The spelling of 770554128 in words is "seven hundred seventy million, five hundred fifty-four thousand, one hundred twenty-eight".