1925820 has 72 divisors (see below), whose sum is σ = 6298656. Its totient is φ = 473472.

The previous prime is 1925801. The next prime is 1925827. The reversal of 1925820 is 285291.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1925827) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1929 + ... + 2751.

2^1925820 is an apocalyptic number.

1925820 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 1925820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3149328).

1925820 is an abundant number, since it is smaller than the sum of its proper divisors (4372836).

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

1925820 is a wasteful number, since it uses less digits than its factorization.

1925820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851 (or 846 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 1925820 is about 1387.7391685760. The cubic root of 1925820 is about 124.4147575397.

The spelling of 1925820 in words is "one million, nine hundred twenty-five thousand, eight hundred twenty".