774433440 has 384 divisors, whose sum is σ = 3033676800. Its totient is φ = 182891520.

The previous prime is 774433433. The next prime is 774433441. The reversal of 774433440 is 44334477.

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 = 774433395 and 774433404.

It is not an unprimeable number, because it can be changed into a prime (774433441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2043171 + ... + 2043549.

It is an arithmetic number, because the mean of its divisors is an integer number (7900200).

Almost surely, 2^774433440 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 774433440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1516838400).

774433440 is an abundant number, since it is smaller than the sum of its proper divisors (2259243360).

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

774433440 is a wasteful number, since it uses less digits than its factorization.

774433440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457 (or 443 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 36.

The square root of 774433440 is about 27828.6442357510. The cubic root of 774433440 is about 918.3213877481.

It can be divided in two parts, 7 and 74433440, that added together give a palindrome (74433447).

The spelling of 774433440 in words is "seven hundred seventy-four million, four hundred thirty-three thousand, four hundred forty".