816738 has 32 divisors (see below), whose sum is σ = 1813056. Its totient is φ = 243648.

The previous prime is 816709. The next prime is 816743. The reversal of 816738 is 837618.

816738 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 816699 and 816708.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2745 + ... + 3027.

It is an arithmetic number, because the mean of its divisors is an integer number (56658).

2⁸¹⁶⁷³⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 816738, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (906528).

816738 is an abundant number, since it is smaller than the sum of its proper divisors (996318).

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

816738 is a wasteful number, since it uses less digits than its factorization.

816738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338.

The product of its digits is 8064, while the sum is 33.

The square root of 816738 is about 903.7355807978. The cubic root of 816738 is about 93.4747374723.

The spelling of 816738 in words is "eight hundred sixteen thousand, seven hundred thirty-eight".