816703020 has 192 divisors, whose sum is σ = 2966261760. Its totient is φ = 182663424.

The previous prime is 816702983. The next prime is 816703031. The reversal of 816703020 is 20307618.

816703020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 175362 + ... + 179958.

It is an arithmetic number, because the mean of its divisors is an integer number (15449280).

Almost surely, 2^816703020 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 816703020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1483130880).

816703020 is an abundant number, since it is smaller than the sum of its proper divisors (2149558740).

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

816703020 is a wasteful number, since it uses less digits than its factorization.

816703020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4669 (or 4661 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 816703020 is about 28578.0163762288. The cubic root of 816703020 is about 934.7340297950.

The spelling of 816703020 in words is "eight hundred sixteen million, seven hundred three thousand, twenty".