4218690 has 32 divisors (see below), whose sum is σ = 11571840. Its totient is φ = 964224.

The previous prime is 4218671. The next prime is 4218701. The reversal of 4218690 is 968124.

It is a super-2 number, since 2×4218690² = 35594690632200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9835 + ... + 10254.

It is an arithmetic number, because the mean of its divisors is an integer number (361620).

Almost surely, 2^4218690 is an apocalyptic number.

4218690 is an abundant number, since it is smaller than the sum of its proper divisors (7353150).

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

4218690 is a wasteful number, since it uses less digits than its factorization.

4218690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20106.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 4218690 is about 2053.9449846576. The cubic root of 4218690 is about 161.5818357275.

The spelling of 4218690 in words is "four million, two hundred eighteen thousand, six hundred ninety".