1900992 has 28 divisors (see below), whose sum is σ = 5030216. Its totient is φ = 633600.

The previous prime is 1900981. The next prime is 1901021. The reversal of 1900992 is 2990091.

It is a super-2 number, since 2×1900992² = 7227541168128, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4759 + ... + 5142.

2^1900992 is an apocalyptic number.

1900992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1900992 is an abundant number, since it is smaller than the sum of its proper divisors (3129224).

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

1900992 is an equidigital number, since it uses as much as digits as its factorization.

1900992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9916 (or 9906 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 30.

The square root of 1900992 is about 1378.7646644732. The cubic root of 1900992 is about 123.8777845431.

The spelling of 1900992 in words is "one million, nine hundred thousand, nine hundred ninety-two".