28193572 has 24 divisors (see below), whose sum is σ = 54355392. Its totient is φ = 12688800.

The previous prime is 28193569. The next prime is 28193579. The reversal of 28193572 is 27539182.

It is not an unprimeable number, because it can be changed into a prime (28193579) 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, 1422 + ... + 7642.

It is an arithmetic number, because the mean of its divisors is an integer number (2264808).

Almost surely, 2^28193572 is an apocalyptic number.

28193572 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

28193572 is a deficient number, since it is larger than the sum of its proper divisors (26161820).

28193572 is a wasteful number, since it uses less digits than its factorization.

28193572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6339 (or 6337 counting only the distinct ones).

The product of its digits is 30240, while the sum is 37.

The square root of 28193572 is about 5309.7619532329. The cubic root of 28193572 is about 304.3570510437.

It can be divided in two parts, 28 and 193572, that added together give a square (193600 = 440²).

The spelling of 28193572 in words is "twenty-eight million, one hundred ninety-three thousand, five hundred seventy-two".