28301552 has 20 divisors (see below), whose sum is σ = 54944400. Its totient is φ = 14122368.

The previous prime is 28301551. The next prime is 28301557. The reversal of 28301552 is 25510382.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28301551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8108 + ... + 11060.

It is an arithmetic number, because the mean of its divisors is an integer number (2747220).

Almost surely, 2^28301552 is an apocalyptic number.

It is an amenable number.

28301552 is a deficient number, since it is larger than the sum of its proper divisors (26642848).

28301552 is a wasteful number, since it uses less digits than its factorization.

28301552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3560 (or 3554 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 28301552 is about 5319.9203001549. The cubic root of 28301552 is about 304.7451135776.

Subtracting from 28301552 its sum of digits (26), we obtain a triangular number (28301526 = T₇₅₂₃).

The spelling of 28301552 in words is "twenty-eight million, three hundred one thousand, five hundred fifty-two".