728038378 has 4 divisors (see below), whose sum is σ = 1092057570. Its totient is φ = 364019188.

The previous prime is 728038373. The next prime is 728038387. The reversal of 728038378 is 873830827.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 452710729 + 275327649 = 21277^2 + 16593^2 .

It is not an unprimeable number, because it can be changed into a prime (728038373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 182009593 + ... + 182009596.

Almost surely, 2^728038378 is an apocalyptic number.

728038378 is a deficient number, since it is larger than the sum of its proper divisors (364019192).

728038378 is a wasteful number, since it uses less digits than its factorization.

728038378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364019191.

The product of its (nonzero) digits is 451584, while the sum is 46.

The square root of 728038378 is about 26982.1863087482. The cubic root of 728038378 is about 899.6040966525.

The spelling of 728038378 in words is "seven hundred twenty-eight million, thirty-eight thousand, three hundred seventy-eight".