3198720 has 216 divisors, whose sum is σ = 12582864. Its totient is φ = 688128.

The previous prime is 3198719. The next prime is 3198721. The reversal of 3198720 is 278913.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3198719) and next prime (3198721).

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

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3198721) 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, 188152 + ... + 188168.

It is an arithmetic number, because the mean of its divisors is an integer number (58254).

Almost surely, 2^3198720 is an apocalyptic number.

3198720 is a gapful number since it is divisible by the number (30) 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 3198720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6291432).

3198720 is an abundant number, since it is smaller than the sum of its proper divisors (9384144).

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

3198720 is a wasteful number, since it uses less digits than its factorization.

3198720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55 (or 34 counting only the distinct ones).

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

The square root of 3198720 is about 1788.4965753392. The cubic root of 3198720 is about 147.3416091573.

The spelling of 3198720 in words is "three million, one hundred ninety-eight thousand, seven hundred twenty".