1990392 has 32 divisors (see below), whose sum is σ = 5011200. Its totient is φ = 658784.

The previous prime is 1990381. The next prime is 1990433. The reversal of 1990392 is 2930991.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5563 + ... + 5909.

It is an arithmetic number, because the mean of its divisors is an integer number (156600).

2^1990392 is an apocalyptic number.

1990392 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1990392 is an abundant number, since it is smaller than the sum of its proper divisors (3020808).

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

1990392 is a wasteful number, since it uses less digits than its factorization.

1990392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595 (or 591 counting only the distinct ones).

The product of its (nonzero) digits is 4374, while the sum is 33.

The square root of 1990392 is about 1410.8125318411. The cubic root of 1990392 is about 125.7900256894.

The spelling of 1990392 in words is "one million, nine hundred ninety thousand, three hundred ninety-two".