28053550 has 24 divisors (see below), whose sum is σ = 59634576. Its totient is φ = 9618240.

The previous prime is 28053547. The next prime is 28053551. The reversal of 28053550 is 5535082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28053551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39727 + ... + 40426.

It is an arithmetic number, because the mean of its divisors is an integer number (2484774).

Almost surely, 2^28053550 is an apocalyptic number.

28053550 is an abundant number, since it is smaller than the sum of its proper divisors (31581026).

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

28053550 is a wasteful number, since it uses less digits than its factorization.

28053550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80172 (or 80167 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 28053550 is about 5296.5602045101. The cubic root of 28053550 is about 303.8523564566.

The spelling of 28053550 in words is "twenty-eight million, fifty-three thousand, five hundred fifty".