1990562 has 8 divisors (see below), whose sum is σ = 3412416. Its totient is φ = 853092.

The previous prime is 1990559. The next prime is 1990577. The reversal of 1990562 is 2650991.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71078 + ... + 71105.

It is an arithmetic number, because the mean of its divisors is an integer number (426552).

2^1990562 is an apocalyptic number.

1990562 is a deficient number, since it is larger than the sum of its proper divisors (1421854).

1990562 is a wasteful number, since it uses less digits than its factorization.

1990562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142192.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 1990562 is about 1410.8727795234. The cubic root of 1990562 is about 125.7936068425.

It can be divided in two parts, 1990 and 562, that added together give a palindrome (2552).

The spelling of 1990562 in words is "one million, nine hundred ninety thousand, five hundred sixty-two".