7513128 has 64 divisors (see below), whose sum is σ = 23856000. Its totient is φ = 2146176.

The previous prime is 7513123. The next prime is 7513139. The reversal of 7513128 is 8213157.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (7513123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 973 + ... + 3996.

It is an arithmetic number, because the mean of its divisors is an integer number (372750).

Almost surely, 2^7513128 is an apocalyptic number.

It is an amenable number.

7513128 is an abundant number, since it is smaller than the sum of its proper divisors (16342872).

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

7513128 is a wasteful number, since it uses less digits than its factorization.

7513128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4991 (or 4981 counting only the distinct ones).

The product of its digits is 1680, while the sum is 27.

The square root of 7513128 is about 2741.0085734999. The cubic root of 7513128 is about 195.8575252242.

It can be divided in two parts, 75 and 13128, that added together give a triangular number (13203 = T₁₆₂).

The spelling of 7513128 in words is "seven million, five hundred thirteen thousand, one hundred twenty-eight".