3821490 has 24 divisors (see below), whose sum is σ = 9936108. Its totient is φ = 1019040.

The previous prime is 3821483. The next prime is 3821491. The reversal of 3821490 is 941283.

It can be written as a sum of positive squares in 2 ways, for example, as 3493161 + 328329 = 1869^2 + 573^2 .

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (3821491) 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 11 ways as a sum of consecutive naturals, for example, 21141 + ... + 21320.

Almost surely, 2^3821490 is an apocalyptic number.

3821490 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3821490 is an abundant number, since it is smaller than the sum of its proper divisors (6114618).

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

3821490 is a wasteful number, since it uses less digits than its factorization.

3821490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42474 (or 42471 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 3821490 is about 1954.8631665669. The cubic root of 3821490 is about 156.3426884724.

It can be divided in two parts, 38 and 21490, that added together give a triangular number (21528 = T₂₀₇).

The spelling of 3821490 in words is "three million, eight hundred twenty-one thousand, four hundred ninety".