28149302 has 8 divisors (see below), whose sum is σ = 43586112. Its totient is φ = 13620600.

The previous prime is 28149281. The next prime is 28149337. The reversal of 28149302 is 20394182.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 226949 + ... + 227072.

It is an arithmetic number, because the mean of its divisors is an integer number (5448264).

Almost surely, 2^28149302 is an apocalyptic number.

28149302 is a deficient number, since it is larger than the sum of its proper divisors (15436810).

28149302 is a wasteful number, since it uses less digits than its factorization.

28149302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454054.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 28149302 is about 5305.5915787026. The cubic root of 28149302 is about 304.1976654798.

The spelling of 28149302 in words is "twenty-eight million, one hundred forty-nine thousand, three hundred two".