28332550 has 48 divisors (see below), whose sum is σ = 55924992. Its totient is φ = 10656800.

The previous prime is 28332547. The next prime is 28332589. The reversal of 28332550 is 5523382.

28332550 = 482² + 483² + ... + 581².

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81477 + ... + 81823.

It is an arithmetic number, because the mean of its divisors is an integer number (1165104).

Almost surely, 2^28332550 is an apocalyptic number.

28332550 is a deficient number, since it is larger than the sum of its proper divisors (27592442).

28332550 is a wasteful number, since it uses less digits than its factorization.

28332550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453 (or 448 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 28332550 is about 5322.8328923610. The cubic root of 28332550 is about 304.8563329469.

It can be divided in two parts, 28332 and 550, that added together give a palindrome (28882).

The spelling of 28332550 in words is "twenty-eight million, three hundred thirty-two thousand, five hundred fifty".