28302630 has 16 divisors (see below), whose sum is σ = 67926384. Its totient is φ = 7547360.

The previous prime is 28302607. The next prime is 28302653. The reversal of 28302630 is 3620382.

It is an interprime number because it is at equal distance from previous prime (28302607) and next prime (28302653).

It is a self number, because there is not a number n which added to its sum of digits gives 28302630.

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, 471681 + ... + 471740.

It is an arithmetic number, because the mean of its divisors is an integer number (4245399).

Almost surely, 2^28302630 is an apocalyptic number.

28302630 is an abundant number, since it is smaller than the sum of its proper divisors (39623754).

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

28302630 is a wasteful number, since it uses less digits than its factorization.

28302630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 943431.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 28302630 is about 5320.0216164974. The cubic root of 28302630 is about 304.7489827537.

It can be divided in two parts, 2830 and 2630, that added together give a triangular number (5460 = T₁₀₄).

The spelling of 28302630 in words is "twenty-eight million, three hundred two thousand, six hundred thirty".