770531328 has 168 divisors, whose sum is σ = 2545525008. Its totient is φ = 220004352.

The previous prime is 770531287. The next prime is 770531329. The reversal of 770531328 is 823135077.

It is a tau number, because it is divible by the number of its divisors (168).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 770531292 and 770531301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (770531329) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 515350 + ... + 516842.

Almost surely, 2^770531328 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 770531328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1272762504).

770531328 is an abundant number, since it is smaller than the sum of its proper divisors (1774993680).

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

770531328 is a wasteful number, since it uses less digits than its factorization.

770531328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1532 (or 1505 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 770531328 is about 27758.4460660175. The cubic root of 770531328 is about 916.7764181685.

The spelling of 770531328 in words is "seven hundred seventy million, five hundred thirty-one thousand, three hundred twenty-eight".