1978092 has 36 divisors (see below), whose sum is σ = 5219760. Its totient is φ = 630432.

The previous prime is 1978091. The next prime is 1978111. The reversal of 1978092 is 2908791.

It is a happy number.

1978092 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1978091) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 367 + ... + 2022.

2^1978092 is an apocalyptic number.

1978092 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1978092 is an abundant number, since it is smaller than the sum of its proper divisors (3241668).

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

1978092 is a wasteful number, since it uses less digits than its factorization.

1978092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2422 (or 2417 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 1978092 is about 1406.4465862591. The cubic root of 1978092 is about 125.5303757629.

The spelling of 1978092 in words is "one million, nine hundred seventy-eight thousand, ninety-two".