28148604 has 24 divisors (see below), whose sum is σ = 71651328. Its totient is φ = 8529840.

The previous prime is 28148579. The next prime is 28148609. The reversal of 28148604 is 40684182.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28148609) 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, 106492 + ... + 106755.

It is an arithmetic number, because the mean of its divisors is an integer number (2985472).

Almost surely, 2^28148604 is an apocalyptic number.

It is an amenable number.

28148604 is an abundant number, since it is smaller than the sum of its proper divisors (43502724).

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

28148604 is a wasteful number, since it uses less digits than its factorization.

28148604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213265 (or 213263 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 28148604 is about 5305.5257986367. The cubic root of 28148604 is about 304.1951511282.

The spelling of 28148604 in words is "twenty-eight million, one hundred forty-eight thousand, six hundred four".