773773728 has 192 divisors, whose sum is σ = 2609252352. Its totient is φ = 195148800.

The previous prime is 773773709. The next prime is 773773747. The reversal of 773773728 is 827377377.

It is a happy number.

773773728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (773773709) and next prime (773773747).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 199003 + ... + 202853.

It is an arithmetic number, because the mean of its divisors is an integer number (13589856).

Almost surely, 2^773773728 is an apocalyptic number.

773773728 is a gapful number since it is divisible by the number (78) 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 773773728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1304626176).

773773728 is an abundant number, since it is smaller than the sum of its proper divisors (1835478624).

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

773773728 is a wasteful number, since it uses less digits than its factorization.

773773728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3907 (or 3899 counting only the distinct ones).

The product of its digits is 2420208, while the sum is 51.

The square root of 773773728 is about 27816.7885996928. The cubic root of 773773728 is about 918.0605520123.

The spelling of 773773728 in words is "seven hundred seventy-three million, seven hundred seventy-three thousand, seven hundred twenty-eight".