28730630 has 16 divisors (see below), whose sum is σ = 52816320. Its totient is φ = 11247552.

The previous prime is 28730623. The next prime is 28730633. The reversal of 28730630 is 3603782.

It is a junction number, because it is equal to n+sod(n) for n = 28730593 and 28730602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28730633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30095 + ... + 31034.

It is an arithmetic number, because the mean of its divisors is an integer number (3301020).

Almost surely, 2^28730630 is an apocalyptic number.

28730630 is a deficient number, since it is larger than the sum of its proper divisors (24085690).

28730630 is a wasteful number, since it uses less digits than its factorization.

28730630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61183.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 28730630 is about 5360.0960812284. The cubic root of 28730630 is about 306.2774691451.

The spelling of 28730630 in words is "twenty-eight million, seven hundred thirty thousand, six hundred thirty".