1890730 has 16 divisors (see below), whose sum is σ = 3452544. Its totient is φ = 745360.

The previous prime is 1890719. The next prime is 1890731. The reversal of 1890730 is 370981.

It is not an unprimeable number, because it can be changed into a prime (1890731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 622 + ... + 2041.

It is an arithmetic number, because the mean of its divisors is an integer number (215784).

2^1890730 is an apocalyptic number.

1890730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1890730 is a deficient number, since it is larger than the sum of its proper divisors (1561814).

1890730 is a wasteful number, since it uses less digits than its factorization.

1890730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2741.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 1890730 is about 1375.0381812881. The cubic root of 1890730 is about 123.6544751372.

The spelling of 1890730 in words is "one million, eight hundred ninety thousand, seven hundred thirty".