728820942 has 16 divisors (see below), whose sum is σ = 1460937600. Its totient is φ = 242391032.

The previous prime is 728820929. The next prime is 728820947. The reversal of 728820942 is 249028827.

It is a junction number, because it is equal to n+sod(n) for n = 728820894 and 728820903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728820947) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 134442 + ... + 139757.

It is an arithmetic number, because the mean of its divisors is an integer number (91308600).

Almost surely, 2^728820942 is an apocalyptic number.

728820942 is an abundant number, since it is smaller than the sum of its proper divisors (732116658).

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

728820942 is a wasteful number, since it uses less digits than its factorization.

728820942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274647.

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 728820942 is about 26996.6839074728. The cubic root of 728820942 is about 899.9263075464.

The spelling of 728820942 in words is "seven hundred twenty-eight million, eight hundred twenty thousand, nine hundred forty-two".