28350224 has 30 divisors (see below), whose sum is σ = 63898254. Its totient is φ = 12149760.

The previous prime is 28350221. The next prime is 28350233. The reversal of 28350224 is 42205382.

It can be written as a sum of positive squares in only one way, i.e., 26832400 + 1517824 = 5180^2 + 1232^2 .

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 28350193 and 28350202.

It is not an unprimeable number, because it can be changed into a prime (28350221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17297 + ... + 18864.

Almost surely, 2^28350224 is an apocalyptic number.

It is an amenable number.

28350224 is an abundant number, since it is smaller than the sum of its proper divisors (35548030).

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

28350224 is a wasteful number, since it uses less digits than its factorization.

28350224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36183 (or 36170 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 28350224 is about 5324.4928396984. The cubic root of 28350224 is about 304.9197101209.

It can be divided in two parts, 28350 and 224, that multiplied together give a square (6350400 = 2520²).

The spelling of 28350224 in words is "twenty-eight million, three hundred fifty thousand, two hundred twenty-four".