28049630 has 32 divisors (see below), whose sum is σ = 58656960. Its totient is φ = 9457920.

The previous prime is 28049611. The next prime is 28049633. The reversal of 28049630 is 3694082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28049633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 986 + ... + 7554.

It is an arithmetic number, because the mean of its divisors is an integer number (1833030).

Almost surely, 2^28049630 is an apocalyptic number.

28049630 is an abundant number, since it is smaller than the sum of its proper divisors (30607330).

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

28049630 is a wasteful number, since it uses less digits than its factorization.

28049630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6644.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 28049630 is about 5296.1901400913. The cubic root of 28049630 is about 303.8382030878.

The spelling of 28049630 in words is "twenty-eight million, forty-nine thousand, six hundred thirty".