734778 has 32 divisors (see below), whose sum is σ = 1782720. Its totient is φ = 222480.

The previous prime is 734771. The next prime is 734803. The reversal of 734778 is 877437.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (734771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25 + ... + 1212.

It is an arithmetic number, because the mean of its divisors is an integer number (55710).

2⁷³⁴⁷⁷⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 734778, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (891360).

734778 is an abundant number, since it is smaller than the sum of its proper divisors (1047942).

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

734778 is a wasteful number, since it uses less digits than its factorization.

734778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1259 (or 1253 counting only the distinct ones).

The product of its digits is 32928, while the sum is 36.

The square root of 734778 is about 857.1919271668. The cubic root of 734778 is about 90.2371523264.

It can be divided in two parts, 73 and 4778, that added together give a triangular number (4851 = T₉₈).

The spelling of 734778 in words is "seven hundred thirty-four thousand, seven hundred seventy-eight".