28224370 has 16 divisors (see below), whose sum is σ = 50963328. Its totient is φ = 11254320.

The previous prime is 28224347. The next prime is 28224373. The reversal of 28224370 is 7342282.

It is not an unprimeable number, because it can be changed into a prime (28224373) 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, 954 + ... + 7573.

It is an arithmetic number, because the mean of its divisors is an integer number (3185208).

Almost surely, 2^28224370 is an apocalyptic number.

28224370 is a deficient number, since it is larger than the sum of its proper divisors (22738958).

28224370 is a wasteful number, since it uses less digits than its factorization.

28224370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8865.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 28224370 is about 5312.6612916692. The cubic root of 28224370 is about 304.4678348938.

The spelling of 28224370 in words is "twenty-eight million, two hundred twenty-four thousand, three hundred seventy".