728130 has 32 divisors (see below), whose sum is σ = 1882944. Its totient is φ = 179136.

The previous prime is 728129. The next prime is 728131. The reversal of 728130 is 31827.

728130 = T₁₁₆ + T₁₁₇ + ... + T₁₈₀.

It is an interprime number because it is at equal distance from previous prime (728129) and next prime (728131).

It is a junction number, because it is equal to n+sod(n) for n = 728097 and 728106.

It is not an unprimeable number, because it can be changed into a prime (728131) 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, 544 + ... + 1323.

It is an arithmetic number, because the mean of its divisors is an integer number (58842).

2⁷²⁸¹³⁰ is an apocalyptic number.

728130 is an abundant number, since it is smaller than the sum of its proper divisors (1154814).

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

728130 is a wasteful number, since it uses less digits than its factorization.

728130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1890.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 728130 is about 853.3053380824. The cubic root of 728130 is about 89.9641832790.

Adding to 728130 its reverse (31827), we get a palindrome (759957).

It can be divided in two parts, 728 and 130, that added together give a palindrome (858).

The spelling of 728130 in words is "seven hundred twenty-eight thousand, one hundred thirty".