28049310 has 24 divisors (see below), whose sum is σ = 72928440. Its totient is φ = 7479792.

The previous prime is 28049309. The next prime is 28049311. The reversal of 28049310 is 1394082.

It is an interprime number because it is at equal distance from previous prime (28049309) and next prime (28049311).

It is a super-2 number, since 2×28049310² = 1573527582952200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28049311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 155740 + ... + 155919.

It is an arithmetic number, because the mean of its divisors is an integer number (3038685).

Almost surely, 2^28049310 is an apocalyptic number.

28049310 is an abundant number, since it is smaller than the sum of its proper divisors (44879130).

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

28049310 is a wasteful number, since it uses less digits than its factorization.

28049310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311672 (or 311669 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 28049310 is about 5296.1599296094. The cubic root of 28049310 is about 303.8370476525.

The spelling of 28049310 in words is "twenty-eight million, forty-nine thousand, three hundred ten".