7642530 has 72 divisors (see below), whose sum is σ = 23128092. Its totient is φ = 1745856.

The previous prime is 7642513. The next prime is 7642543. The reversal of 7642530 is 352467.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7568001 + 74529 = 2751^2 + 273^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7642494 and 7642503.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3544 + ... + 5276.

Almost surely, 2^7642530 is an apocalyptic number.

7642530 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 7642530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11564046).

7642530 is an abundant number, since it is smaller than the sum of its proper divisors (15485562).

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

7642530 is a wasteful number, since it uses less digits than its factorization.

7642530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1760 (or 1750 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 7642530 is about 2764.5126152724. The cubic root of 7642530 is about 196.9755782381.

Adding to 7642530 its reverse (352467), we get a palindrome (7994997).

The spelling of 7642530 in words is "seven million, six hundred forty-two thousand, five hundred thirty".