28229470 has 32 divisors (see below), whose sum is σ = 52902720. Its totient is φ = 10832640.

The previous prime is 28229449. The next prime is 28229471. The reversal of 28229470 is 7492282.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28229471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90034 + ... + 90346.

It is an arithmetic number, because the mean of its divisors is an integer number (1653210).

Almost surely, 2^28229470 is an apocalyptic number.

28229470 is a deficient number, since it is larger than the sum of its proper divisors (24673250).

28229470 is a wasteful number, since it uses less digits than its factorization.

28229470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 28229470 is about 5313.1412554157. The cubic root of 28229470 is about 304.4861723854.

The spelling of 28229470 in words is "twenty-eight million, two hundred twenty-nine thousand, four hundred seventy".