770280840 has 192 divisors, whose sum is σ = 2967269760. Its totient is φ = 176048640.

The previous prime is 770280827. The next prime is 770280883. The reversal of 770280840 is 48082077.

770280840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×770280840² = 1186665144942211200, which contains 22 as substring.

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 = 770280795 and 770280804.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 62380 + ... + 73700.

It is an arithmetic number, because the mean of its divisors is an integer number (15454530).

Almost surely, 2^770280840 is an apocalyptic number.

770280840 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 770280840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1483634880).

770280840 is an abundant number, since it is smaller than the sum of its proper divisors (2196988920).

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

770280840 is a wasteful number, since it uses less digits than its factorization.

770280840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11354 (or 11338 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 36.

The square root of 770280840 is about 27753.9337752327. The cubic root of 770280840 is about 916.6770640510.

The spelling of 770280840 in words is "seven hundred seventy million, two hundred eighty thousand, eight hundred forty".