28958130 has 24 divisors (see below), whose sum is σ = 75291372. Its totient is φ = 7722144.

The previous prime is 28958129. The next prime is 28958201. The reversal of 28958130 is 3185982.

It can be written as a sum of positive squares in 2 ways, for example, as 28164249 + 793881 = 5307^2 + 891^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 160789 + ... + 160968.

Almost surely, 2^28958130 is an apocalyptic number.

28958130 is an abundant number, since it is smaller than the sum of its proper divisors (46333242).

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

28958130 is a wasteful number, since it uses less digits than its factorization.

28958130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321770 (or 321767 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 28958130 is about 5381.2758710180. The cubic root of 28958130 is about 307.0837516904.

It can be divided in two parts, 2895 and 8130, that added together give a square (11025 = 105²).

The spelling of 28958130 in words is "twenty-eight million, nine hundred fifty-eight thousand, one hundred thirty".