28149528 has 32 divisors (see below), whose sum is σ = 76772160. Its totient is φ = 8530080.

The previous prime is 28149503. The next prime is 28149529. The reversal of 28149528 is 82594182.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28149529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53050 + ... + 53577.

It is an arithmetic number, because the mean of its divisors is an integer number (2399130).

Almost surely, 2^28149528 is an apocalyptic number.

It is an amenable number.

28149528 is an abundant number, since it is smaller than the sum of its proper divisors (48622632).

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

28149528 is a wasteful number, since it uses less digits than its factorization.

28149528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106647 (or 106643 counting only the distinct ones).

The product of its digits is 46080, while the sum is 39.

The square root of 28149528 is about 5305.6128769446. The cubic root of 28149528 is about 304.1984795733.

The spelling of 28149528 in words is "twenty-eight million, one hundred forty-nine thousand, five hundred twenty-eight".