7964220 has 72 divisors (see below), whose sum is σ = 24533712. Its totient is φ = 1928960.

The previous prime is 7964207. The next prime is 7964237. The reversal of 7964220 is 224697.

It is a happy number.

7964220 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is an Ulam number.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6712 + ... + 7808.

It is an arithmetic number, because the mean of its divisors is an integer number (340746).

Almost surely, 2^7964220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7964220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12266856).

7964220 is an abundant number, since it is smaller than the sum of its proper divisors (16569492).

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

7964220 is a wasteful number, since it uses less digits than its factorization.

7964220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1131 (or 1118 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 7964220 is about 2822.0949665098. The cubic root of 7964220 is about 199.7013877087.

The spelling of 7964220 in words is "seven million, nine hundred sixty-four thousand, two hundred twenty".