28989130 has 32 divisors (see below), whose sum is σ = 54763776. Its totient is φ = 11035584.

The previous prime is 28989113. The next prime is 28989137. The reversal of 28989130 is 3198982.

It is not an unprimeable number, because it can be changed into a prime (28989137) 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, 16557 + ... + 18223.

It is an arithmetic number, because the mean of its divisors is an integer number (1711368).

Almost surely, 2^28989130 is an apocalyptic number.

28989130 is a deficient number, since it is larger than the sum of its proper divisors (25774646).

28989130 is a wasteful number, since it uses less digits than its factorization.

28989130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1758.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 28989130 is about 5384.1554583797. The cubic root of 28989130 is about 307.1932914682.

The spelling of 28989130 in words is "twenty-eight million, nine hundred eighty-nine thousand, one hundred thirty".