3728870 has 16 divisors (see below), whose sum is σ = 6740928. Its totient is φ = 1485120.

The previous prime is 3728867. The next prime is 3728873. The reversal of 3728870 is 788273.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3728867) and next prime (3728873).

It is a self number, because there is not a number n which added to its sum of digits gives 3728870.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3728873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2147 + ... + 3473.

It is an arithmetic number, because the mean of its divisors is an integer number (421308).

Almost surely, 2^3728870 is an apocalyptic number.

3728870 is a deficient number, since it is larger than the sum of its proper divisors (3012058).

3728870 is a wasteful number, since it uses less digits than its factorization.

3728870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1615.

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 3728870 is about 1931.0282235120. The cubic root of 3728870 is about 155.0692718463.

The spelling of 3728870 in words is "three million, seven hundred twenty-eight thousand, eight hundred seventy".