7228764 has 84 divisors (see below), whose sum is σ = 19770184. Its totient is φ = 2309472.

The previous prime is 7228747. The next prime is 7228769. The reversal of 7228764 is 4678227.

7228764 = T₈₅ + T₈₆ + ... + T₃₅₂.

It is a super-6 number, since 6×7228764⁶ (a number of 42 digits) contains 666666 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7228769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 107859 + ... + 107925.

Almost surely, 2^7228764 is an apocalyptic number.

7228764 is a gapful number since it is divisible by the number (74) 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 7228764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9885092).

7228764 is an abundant number, since it is smaller than the sum of its proper divisors (12541420).

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

7228764 is a wasteful number, since it uses less digits than its factorization.

7228764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126 (or 109 counting only the distinct ones).

The product of its digits is 37632, while the sum is 36.

The square root of 7228764 is about 2688.6360854530. The cubic root of 7228764 is about 193.3546772578.

The spelling of 7228764 in words is "seven million, two hundred twenty-eight thousand, seven hundred sixty-four".