820385054 has 8 divisors (see below), whose sum is σ = 1270273728. Its totient is φ = 396960480.

The previous prime is 820384993. The next prime is 820385077. The reversal of 820385054 is 450583028.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6615947 + ... + 6616070.

It is an arithmetic number, because the mean of its divisors is an integer number (158784216).

Almost surely, 2^820385054 is an apocalyptic number.

820385054 is a deficient number, since it is larger than the sum of its proper divisors (449888674).

820385054 is a wasteful number, since it uses less digits than its factorization.

820385054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13232050.

The product of its (nonzero) digits is 38400, while the sum is 35.

The square root of 820385054 is about 28642.3646719331. The cubic root of 820385054 is about 936.1366461993.

The spelling of 820385054 in words is "eight hundred twenty million, three hundred eighty-five thousand, fifty-four".