3813720 has 64 divisors (see below), whose sum is σ = 11651040. Its totient is φ = 998400.

The previous prime is 3813679. The next prime is 3813751. The reversal of 3813720 is 273183.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7060 + ... + 7580.

Almost surely, 2^3813720 is an apocalyptic number.

3813720 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 3813720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5825520).

3813720 is an abundant number, since it is smaller than the sum of its proper divisors (7837320).

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

3813720 is a wasteful number, since it uses less digits than its factorization.

3813720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596 (or 592 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 3813720 is about 1952.8748039749. The cubic root of 3813720 is about 156.2366559271.

The spelling of 3813720 in words is "three million, eight hundred thirteen thousand, seven hundred twenty".