1906002 has 36 divisors (see below), whose sum is σ = 4806126. Its totient is φ = 544320.

The previous prime is 1905983. The next prime is 1906007. The reversal of 1906002 is 2006091.

It can be written as a sum of positive squares in only one way, i.e., 1535121 + 370881 = 1239^2 + 609^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1906007) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 199 + ... + 1962.

2^1906002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1906002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2403063).

1906002 is an abundant number, since it is smaller than the sum of its proper divisors (2900124).

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

1906002 is a wasteful number, since it uses less digits than its factorization.

1906002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2183 (or 2173 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 1906002 is about 1380.5803127671. The cubic root of 1906002 is about 123.9865143156.

The spelling of 1906002 in words is "one million, nine hundred six thousand, two".