28148752 has 20 divisors (see below), whose sum is σ = 55024380. Its totient is φ = 13948928.

The previous prime is 28148741. The next prime is 28148773. The reversal of 28148752 is 25784182.

It can be written as a sum of positive squares in 2 ways, for example, as 4177936 + 23970816 = 2044^2 + 4896^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5977 + ... + 9592.

It is an arithmetic number, because the mean of its divisors is an integer number (2751219).

Almost surely, 2^28148752 is an apocalyptic number.

It is an amenable number.

28148752 is a deficient number, since it is larger than the sum of its proper divisors (26875628).

28148752 is a wasteful number, since it uses less digits than its factorization.

28148752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15690 (or 15684 counting only the distinct ones).

The product of its digits is 35840, while the sum is 37.

The square root of 28148752 is about 5305.5397463406. The cubic root of 28148752 is about 304.1956842607.

It can be divided in two parts, 28148 and 752, that added together give a square (28900 = 170²).

The spelling of 28148752 in words is "twenty-eight million, one hundred forty-eight thousand, seven hundred fifty-two".