7915284 has 54 divisors (see below), whose sum is σ = 21682206. Its totient is φ = 2433600.

The previous prime is 7915283. The next prime is 7915321. The reversal of 7915284 is 4825197.

It can be written as a sum of positive squares in 3 ways, for example, as 1040400 + 6874884 = 1020^2 + 2622^2 .

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 (7915283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5434 + ... + 6734.

Almost surely, 2^7915284 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 7915284, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10841103).

7915284 is an abundant number, since it is smaller than the sum of its proper divisors (13766922).

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

7915284 is a wasteful number, since it uses less digits than its factorization.

7915284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1337 (or 1319 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 7915284 is about 2813.4114523119. The cubic root of 7915284 is about 199.2915266241.

The spelling of 7915284 in words is "seven million, nine hundred fifteen thousand, two hundred eighty-four".