1973840 has 40 divisors (see below), whose sum is σ = 5008608. Its totient is φ = 717440.

The previous prime is 1973831. The next prime is 1973857. The reversal of 1973840 is 483791.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 1973797 and 1973806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 242 + ... + 2001.

2^1973840 is an apocalyptic number.

1973840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1973840 is an abundant number, since it is smaller than the sum of its proper divisors (3034768).

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

1973840 is a wasteful number, since it uses less digits than its factorization.

1973840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2267 (or 2261 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 1973840 is about 1404.9341621585. The cubic root of 1973840 is about 125.4403667949.

The spelling of 1973840 in words is "one million, nine hundred seventy-three thousand, eight hundred forty".