820367672 has 8 divisors (see below), whose sum is σ = 1538189400. Its totient is φ = 410183832.

The previous prime is 820367671. The next prime is 820367687. The reversal of 820367672 is 276763028.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (820367671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51272972 + ... + 51272987.

It is an arithmetic number, because the mean of its divisors is an integer number (192273675).

Almost surely, 2^820367672 is an apocalyptic number.

It is an amenable number.

820367672 is a deficient number, since it is larger than the sum of its proper divisors (717821728).

820367672 is a wasteful number, since it uses less digits than its factorization.

820367672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102545965 (or 102545961 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 41.

The square root of 820367672 is about 28642.0612386748. The cubic root of 820367672 is about 936.1300346527.

The spelling of 820367672 in words is "eight hundred twenty million, three hundred sixty-seven thousand, six hundred seventy-two".