1890216 has 40 divisors (see below), whose sum is σ = 5296170. Its totient is φ = 629856.

The previous prime is 1890211. The next prime is 1890221. The reversal of 1890216 is 6120981.

It is an interprime number because it is at equal distance from previous prime (1890211) and next prime (1890221).

It can be written as a sum of positive squares in only one way, i.e., 980100 + 910116 = 990^2 + 954^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 1890216.

It is not an unprimeable number, because it can be changed into a prime (1890211) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 811 + ... + 2106.

2^1890216 is an apocalyptic number.

It is an amenable number.

1890216 is an abundant number, since it is smaller than the sum of its proper divisors (3405954).

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

1890216 is a wasteful number, since it uses less digits than its factorization.

1890216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2935 (or 2922 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 1890216 is about 1374.8512646828. The cubic root of 1890216 is about 123.6432688552.

The spelling of 1890216 in words is "one million, eight hundred ninety thousand, two hundred sixteen".