3728290 has 8 divisors (see below), whose sum is σ = 6710940. Its totient is φ = 1491312.

The previous prime is 3728273. The next prime is 3728293. The reversal of 3728290 is 928273.

3728290 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 3448449 + 279841 = 1857^2 + 529^2 .

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

It is not an unprimeable number, because it can be changed into a prime (3728293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186405 + ... + 186424.

Almost surely, 2^3728290 is an apocalyptic number.

3728290 is a deficient number, since it is larger than the sum of its proper divisors (2982650).

3728290 is a wasteful number, since it uses less digits than its factorization.

3728290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372836.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 3728290 is about 1930.8780386135. The cubic root of 3728290 is about 155.0612314443.

The spelling of 3728290 in words is "three million, seven hundred twenty-eight thousand, two hundred ninety".