1930840 has 16 divisors (see below), whose sum is σ = 4344480. Its totient is φ = 772320.

The previous prime is 1930823. The next prime is 1930879. The reversal of 1930840 is 480391.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24096 + ... + 24175.

It is an arithmetic number, because the mean of its divisors is an integer number (271530).

2^1930840 is an apocalyptic number.

1930840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1930840 is an abundant number, since it is smaller than the sum of its proper divisors (2413640).

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

1930840 is a wasteful number, since it uses less digits than its factorization.

1930840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48282 (or 48278 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1930840 is about 1389.5466886722. The cubic root of 1930840 is about 124.5227669745.

The spelling of 1930840 in words is "one million, nine hundred thirty thousand, eight hundred forty".