7284720 has 80 divisors (see below), whose sum is σ = 22855680. Its totient is φ = 1919232.

The previous prime is 7284689. The next prime is 7284749. The reversal of 7284720 is 274827.

7284720 = T₁₀₁ + T₁₀₂ + ... + T₃₅₄.

It is a tau number, because it is divible by the number of its divisors (80).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30361 + ... + 30599.

It is an arithmetic number, because the mean of its divisors is an integer number (285696).

Almost surely, 2^7284720 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 7284720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11427840).

7284720 is an abundant number, since it is smaller than the sum of its proper divisors (15570960).

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

7284720 is a wasteful number, since it uses less digits than its factorization.

7284720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382 (or 376 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 30.

The square root of 7284720 is about 2699.0220451119. The cubic root of 7284720 is about 193.8522983885.

The spelling of 7284720 in words is "seven million, two hundred eighty-four thousand, seven hundred twenty".