1690252 has 6 divisors (see below), whose sum is σ = 2957948. Its totient is φ = 845124.

The previous prime is 1690231. The next prime is 1690253. The reversal of 1690252 is 2520961.

It is not an unprimeable number, because it can be changed into a prime (1690253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211278 + ... + 211285.

2^1690252 is an apocalyptic number.

It is an amenable number.

1690252 is a deficient number, since it is larger than the sum of its proper divisors (1267696).

1690252 is a wasteful number, since it uses less digits than its factorization.

1690252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422567 (or 422565 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 1690252 is about 1300.0969194641. The cubic root of 1690252 is about 119.1197626767.

The spelling of 1690252 in words is "one million, six hundred ninety thousand, two hundred fifty-two".