28215192 has 32 divisors (see below), whose sum is σ = 70862400. Its totient is φ = 9361824.

The previous prime is 28215191. The next prime is 28215197. The reversal of 28215192 is 29151282.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28215191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2859 + ... + 8037.

It is an arithmetic number, because the mean of its divisors is an integer number (2214450).

Almost surely, 2^28215192 is an apocalyptic number.

It is an amenable number.

28215192 is an abundant number, since it is smaller than the sum of its proper divisors (42647208).

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

28215192 is a wasteful number, since it uses less digits than its factorization.

28215192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5415 (or 5411 counting only the distinct ones).

The product of its digits is 2880, while the sum is 30.

The square root of 28215192 is about 5311.7974358968. The cubic root of 28215192 is about 304.4348290347.

The spelling of 28215192 in words is "twenty-eight million, two hundred fifteen thousand, one hundred ninety-two".