1890238 has 8 divisors (see below), whose sum is σ = 3240432. Its totient is φ = 810096.

The previous prime is 1890227. The next prime is 1890241. The reversal of 1890238 is 8320981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67495 + ... + 67522.

It is an arithmetic number, because the mean of its divisors is an integer number (405054).

2^1890238 is an apocalyptic number.

1890238 is a deficient number, since it is larger than the sum of its proper divisors (1350194).

1890238 is a wasteful number, since it uses less digits than its factorization.

1890238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135026.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 1890238 is about 1374.8592655250. The cubic root of 1890238 is about 123.6437485431.

The spelling of 1890238 in words is "one million, eight hundred ninety thousand, two hundred thirty-eight".