3906250 has 20 divisors (see below), whose sum is σ = 7324218. Its totient is φ = 1562500.

The previous prime is 3906247. The next prime is 3906263. The reversal of 3906250 is 526093.

It can be written as a sum of positive squares in 5 ways, for example, as 3674889 + 231361 = 1917^2 + 481^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a nialpdrome in base 5.

It is an unprimeable number.

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 9 ways as a sum of consecutive naturals, for example, 781248 + ... + 781252.

Almost surely, 2^3906250 is an apocalyptic number.

3906250 is a deficient number, since it is larger than the sum of its proper divisors (3417968).

3906250 is an frugal number, since it uses more digits than its factorization.

3906250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47 (or 7 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 3906250 is about 1976.4235376052. The cubic root of 3906250 is about 157.4901312369.

The spelling of 3906250 in words is "three million, nine hundred six thousand, two hundred fifty".