4215490 has 32 divisors (see below), whose sum is σ = 8137584. Its totient is φ = 1566720.

The previous prime is 4215457. The next prime is 4215493. The reversal of 4215490 is 945124.

It can be written as a sum of positive squares in 8 ways, for example, as 1212201 + 3003289 = 1101^2 + 1733^2 .

It is not an unprimeable number, because it can be changed into a prime (4215493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23200 + ... + 23380.

Almost surely, 2^4215490 is an apocalyptic number.

4215490 is a deficient number, since it is larger than the sum of its proper divisors (3922094).

4215490 is a wasteful number, since it uses less digits than its factorization.

4215490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 4215490 is about 2053.1658481477. The cubic root of 4215490 is about 161.5409705407.

The spelling of 4215490 in words is "four million, two hundred fifteen thousand, four hundred ninety".