1890490 has 32 divisors (see below), whose sum is σ = 3939840. Its totient is φ = 639744.

The previous prime is 1890487. The next prime is 1890509. The reversal of 1890490 is 940981.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7791 + ... + 8029.

It is an arithmetic number, because the mean of its divisors is an integer number (123120).

2^1890490 is an apocalyptic number.

1890490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1890490 is an abundant number, since it is smaller than the sum of its proper divisors (2049350).

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

1890490 is a wasteful number, since it uses less digits than its factorization.

1890490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 1890490 is about 1374.9509082145. The cubic root of 1890490 is about 123.6492428848.

The spelling of 1890490 in words is "one million, eight hundred ninety thousand, four hundred ninety".