7622720 has 112 divisors (see below), whose sum is σ = 21506688. Its totient is φ = 2519040.

The previous prime is 7622717. The next prime is 7622731. The reversal of 7622720 is 272267.

It is a tau number, because it is divible by the number of its divisors (112).

It is a self number, because there is not a number n which added to its sum of digits gives 7622720.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91799 + ... + 91881.

It is an arithmetic number, because the mean of its divisors is an integer number (192024).

Almost surely, 2^7622720 is an apocalyptic number.

7622720 is a gapful number since it is divisible by the number (70) 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 7622720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10753344).

7622720 is an abundant number, since it is smaller than the sum of its proper divisors (13883968).

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

7622720 is a wasteful number, since it uses less digits than its factorization.

7622720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148 (or 138 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 7622720 is about 2760.9273804285. The cubic root of 7622720 is about 196.8052392462.

Adding to 7622720 its reverse (272267), we get a palindrome (7894987).

The spelling of 7622720 in words is "seven million, six hundred twenty-two thousand, seven hundred twenty".