28115630 has 16 divisors (see below), whose sum is σ = 53272080. Its totient is φ = 10654272.

The previous prime is 28115629. The next prime is 28115699. The reversal of 28115630 is 3651182.

It is a self number, because there is not a number n which added to its sum of digits gives 28115630.

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, 73799 + ... + 74178.

It is an arithmetic number, because the mean of its divisors is an integer number (3329505).

Almost surely, 2^28115630 is an apocalyptic number.

28115630 is a deficient number, since it is larger than the sum of its proper divisors (25156450).

28115630 is a wasteful number, since it uses less digits than its factorization.

28115630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148003.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 28115630 is about 5302.4173732365. The cubic root of 28115630 is about 304.0763240378.

The spelling of 28115630 in words is "twenty-eight million, one hundred fifteen thousand, six hundred thirty".