1938720 has 96 divisors (see below), whose sum is σ = 6991488. Its totient is φ = 442368.

The previous prime is 1938719. The next prime is 1938743. The reversal of 1938720 is 278391.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3072 + ... + 3648.

It is an arithmetic number, because the mean of its divisors is an integer number (72828).

2^1938720 is an apocalyptic number.

1938720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1938720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3495744).

1938720 is an abundant number, since it is smaller than the sum of its proper divisors (5052768).

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

1938720 is a wasteful number, since it uses less digits than its factorization.

1938720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602 (or 594 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 1938720 is about 1392.3792586792. The cubic root of 1938720 is about 124.6919347233.

The spelling of 1938720 in words is "one million, nine hundred thirty-eight thousand, seven hundred twenty".