3820290 has 16 divisors (see below), whose sum is σ = 9168768. Its totient is φ = 1018736.

The previous prime is 3820279. The next prime is 3820303. The reversal of 3820290 is 920283.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 3820290.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63642 + ... + 63701.

It is an arithmetic number, because the mean of its divisors is an integer number (573048).

Almost surely, 2^3820290 is an apocalyptic number.

3820290 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3820290 is an abundant number, since it is smaller than the sum of its proper divisors (5348478).

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

3820290 is a wasteful number, since it uses less digits than its factorization.

3820290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127353.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 3820290 is about 1954.5562156152. The cubic root of 3820290 is about 156.3263221801.

The spelling of 3820290 in words is "three million, eight hundred twenty thousand, two hundred ninety".