1992490 has 16 divisors (see below), whose sum is σ = 3742848. Its totient is φ = 762256.

The previous prime is 1992481. The next prime is 1992493. The reversal of 1992490 is 942991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1992493) 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, 4102 + ... + 4561.

It is an arithmetic number, because the mean of its divisors is an integer number (233928).

2^1992490 is an apocalyptic number.

1992490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1992490 is a deficient number, since it is larger than the sum of its proper divisors (1750358).

1992490 is a wasteful number, since it uses less digits than its factorization.

1992490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8693.

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 1992490 is about 1411.5558791631. Note that the first 3 decimals coincide. The cubic root of 1992490 is about 125.8342070706.

It can be divided in two parts, 199 and 2490, that multiplied together give a triangular number (495510 = T₉₉₅).

The spelling of 1992490 in words is "one million, nine hundred ninety-two thousand, four hundred ninety".