1920030 has 64 divisors (see below), whose sum is σ = 5419008. Its totient is φ = 426240.

The previous prime is 1920013. The next prime is 1920043. The reversal of 1920030 is 300291.

1920030 = 217² + 218² + ... + 251².

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1919991 and 1920009.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8499 + ... + 8721.

It is an arithmetic number, because the mean of its divisors is an integer number (84672).

2^1920030 is an apocalyptic number.

1920030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1920030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2709504).

1920030 is an abundant number, since it is smaller than the sum of its proper divisors (3498978).

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

1920030 is a wasteful number, since it uses less digits than its factorization.

1920030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 1920030 is about 1385.6514713304. The cubic root of 1920030 is about 124.2899475749.

The spelling of 1920030 in words is "one million, nine hundred twenty thousand, thirty".