820173294 has 24 divisors (see below), whose sum is σ = 1787950632. Its totient is φ = 271712880.

The previous prime is 820173287. The next prime is 820173317. The reversal of 820173294 is 492371028.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 136837 + ... + 142704.

It is an arithmetic number, because the mean of its divisors is an integer number (74497943).

Almost surely, 2^820173294 is an apocalyptic number.

820173294 is an abundant number, since it is smaller than the sum of its proper divisors (967777338).

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

820173294 is a wasteful number, since it uses less digits than its factorization.

820173294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279712 (or 279709 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 820173294 is about 28638.6678111954. The cubic root of 820173294 is about 936.0560932305.

The spelling of 820173294 in words is "eight hundred twenty million, one hundred seventy-three thousand, two hundred ninety-four".