820239038 has 8 divisors (see below), whose sum is σ = 1230879888. Its totient is φ = 409945744.

The previous prime is 820239031. The next prime is 820239047. The reversal of 820239038 is 830932028.

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

It is a junction number, because it is equal to n+sod(n) for n = 820238989 and 820239007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (820239031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80906 + ... + 90477.

It is an arithmetic number, because the mean of its divisors is an integer number (153859986).

Almost surely, 2^820239038 is an apocalyptic number.

820239038 is a deficient number, since it is larger than the sum of its proper divisors (410640850).

820239038 is a wasteful number, since it uses less digits than its factorization.

820239038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173778.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 820239038 is about 28639.8156069483. The cubic root of 820239038 is about 936.0811035659.

The spelling of 820239038 in words is "eight hundred twenty million, two hundred thirty-nine thousand, thirty-eight".