2043720 has 96 divisors (see below), whose sum is σ = 7600320. Its totient is φ = 466560.

The previous prime is 2043719. The next prime is 2043721. The reversal of 2043720 is 273402.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2043719) and next prime (2043721).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2043693 and 2043702.

It is not an unprimeable number, because it can be changed into a prime (2043721) 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, 2115 + ... + 2925.

It is an arithmetic number, because the mean of its divisors is an integer number (79170).

2^2043720 is an apocalyptic number.

2043720 is a gapful number since it is divisible by the number (20) 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 2043720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3800160).

2043720 is an abundant number, since it is smaller than the sum of its proper divisors (5556600).

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

2043720 is a wasteful number, since it uses less digits than its factorization.

2043720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835 (or 828 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

The square root of 2043720 is about 1429.5873530498. The cubic root of 2043720 is about 126.9035579223.

The spelling of 2043720 in words is "two million, forty-three thousand, seven hundred twenty".