4050720 has 144 divisors (see below), whose sum is σ = 14447160. Its totient is φ = 1032192.

The previous prime is 4050719. The next prime is 4050721. The reversal of 4050720 is 270504.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (4050719) and next prime (4050721).

It can be written as a sum of positive squares in 4 ways, for example, as 3196944 + 853776 = 1788^2 + 924^2 .

It is a tau number, because it is divible by the number of its divisors (144).

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 = 4050693 and 4050702.

It is not an unprimeable number, because it can be changed into a prime (4050721) 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, 41712 + ... + 41808.

Almost surely, 2^4050720 is an apocalyptic number.

4050720 is a gapful number since it is divisible by the number (40) 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 4050720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7223580).

4050720 is an abundant number, since it is smaller than the sum of its proper divisors (10396440).

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

4050720 is a wasteful number, since it uses less digits than its factorization.

4050720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147 (or 136 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 18.

The square root of 4050720 is about 2012.6400572383. The cubic root of 4050720 is about 159.4082306716.

The spelling of 4050720 in words is "four million, fifty thousand, seven hundred twenty".