4081200720 has 40 divisors (see below), whose sum is σ = 12651722976. Its totient is φ = 1088320128.

The previous prime is 4081200691. The next prime is 4081200731. The reversal of 4081200720 is 270021804.

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

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

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, 8502262 + ... + 8502741.

Almost surely, 2^4081200720 is an apocalyptic number.

4081200720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4081200720 is an abundant number, since it is smaller than the sum of its proper divisors (8570522256).

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

4081200720 is a wasteful number, since it uses less digits than its factorization.

4081200720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17005019 (or 17005013 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 4081200720 is about 63884.2759996542. The cubic root of 4081200720 is about 1598.0706849414.

The spelling of 4081200720 in words is "four billion, eighty-one million, two hundred thousand, seven hundred twenty".