770716128 has 96 divisors (see below), whose sum is σ = 2490034176. Its totient is φ = 203263488.

The previous prime is 770716127. The next prime is 770716139. The reversal of 770716128 is 821617077.

It is a tau number, because it is divible by the number of its divisors (96).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (770716127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35376 + ... + 52847.

It is an arithmetic number, because the mean of its divisors is an integer number (25937856).

Almost surely, 2^770716128 is an apocalyptic number.

770716128 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

770716128 is an abundant number, since it is smaller than the sum of its proper divisors (1719318048).

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

770716128 is a wasteful number, since it uses less digits than its factorization.

770716128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88256 (or 88248 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 39.

The square root of 770716128 is about 27761.7745830485. The cubic root of 770716128 is about 916.8497038496.

The spelling of 770716128 in words is "seven hundred seventy million, seven hundred sixteen thousand, one hundred twenty-eight".