130728828 has 24 divisors (see below), whose sum is σ = 312474960. Its totient is φ = 42513280.

The previous prime is 130728817. The next prime is 130728841. The reversal of 130728828 is 828827031.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132363 + ... + 133346.

It is an arithmetic number, because the mean of its divisors is an integer number (13019790).

Almost surely, 2^130728828 is an apocalyptic number.

It is an amenable number.

130728828 is an abundant number, since it is smaller than the sum of its proper divisors (181746132).

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

130728828 is a wasteful number, since it uses less digits than its factorization.

130728828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265757 (or 265755 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 39.

The square root of 130728828 is about 11433.6708016280. The cubic root of 130728828 is about 507.5246291848.

It can be divided in two parts, 1307 and 28828, that added together give a triangular number (30135 = T₂₄₅).

The spelling of 130728828 in words is "one hundred thirty million, seven hundred twenty-eight thousand, eight hundred twenty-eight".